{"title":"Manufacturer by Baader Planetarium","description":"","products":[{"product_id":"10-x-60-baader-planetarium-vario-finder-1060vq","title":"10 x 60 Vario Finder (1060VQ)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe 10 x 60 Vario Finder is a fine replacement for our former 8 x 50 Straight-through Finder (discontinued). This new finder is produced by Baader Planetarium and introduces many new features and functionalities.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality coated 61mm f\/4 objective (250 mm focal length)\u003c\/li\u003e\n\u003cli\u003eCoarse focusing is provided by the sliding draw tube (35 mm travel), and fine focusing is performed using the threaded objective cell with lens-locking ring (12 mm travel).\u003c\/li\u003e\n\u003cli\u003e1 ¼\" brass clamp ring with 3 thumb screws for interchangeable eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003e45° erecting prism with 1 ¼\" nosepiece and T-2 thread\u003c\/li\u003e\n\u003cli\u003e25mm eyepiece with variable brightness illuminated measuring reticle\u003c\/li\u003e\n\u003cli\u003eRetractable dew shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe Vario Finder system is unique in that it utilizes a high quality 2-element Zeiss designed objective and an interchangeable T-2 accessory system that will allow the included 45° prism to be switched with user-provided 90° prisms, or used in a straight-through configuration. Because of the exceptional quality of the optics, this finder will also be able to be used as a guide scope employing a variety of new 3rd party guide cameras.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"pt10arial\"\u003eThis finder assembly includes a newly designed Astro-Physics custom bracket for mounting in our Quick Release Base (\u003c\/span\u003e\u003cspan class=\"pt10link\"\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#qrbased\" class=\"pt10link\"\u003eQRBASED\u003c\/a\u003e\u003c\/span\u003e\u003cspan class=\"pt10arial\"\u003e). The bracket slides into the dovetail base and then tightens quickly with two thumbscrews. This provides a secure and repeatable method of attachment. It may also be attached to either of our sliding bars (\u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#9\" class=\"pt10link\"\u003e7\" SB0800\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#10\" class=\"pt10link\"\u003e10\" SB1000\u003c\/a\u003e\u003cspan class=\"pt10arial\"\u003e). A tripod adapter is also included with the finder.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003eThe bracket assembly includes the bracket ring, alignment screws, and male dovetail base. The nylon alignment screws provide a quick and easy way to align your finder without marring its finish. \u003c\/span\u003e\u003cspan class=\"pt10arialbold\"\u003eNote: A\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#qrbased\" class=\"pt10link\"\u003eQuick Release Base (QRBASED)\u003c\/a\u003e, purchased separately, is required for attachment.\u003c\/span\u003e \u003cspan class=\"pt10arial\"\u003eThe illuminator uses one CR2032 coin battery (included).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eWeight: 2 lb. 1 oz. (0.935 kg)\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31540296582,"sku":"1060VQ","price":541.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Vario-Finder-w_bracket.jpg?v=1477009805"},{"product_id":"10-x-60-quick-release-finder-bracket-s1060qrm","title":"10 x 60 Quick Release Finder Bracket (S1060QRM)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis stylish quick release finder bracket was developed by Astro-Physics specifically for the 10 x 60 Baader Planetarium Vario-Finder to provide a rigid, yet light weight, mounting system. However, it can be used with any finder that has a body length of at least 3 ¼\" (83mm) and a diameter of between 2 3\/8\" (60 mm) and 2 5\/8\" (67 mm), allowing it to fit into this bracket with enough room left over for adjustment. This versatile bracket can be mounted in several ways:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"pt10arial\"\u003eAttach to a Base for Quick Release Finder Bracket (\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#qrbased\" class=\"pt10link\"\u003eQRBASED\u003c\/a\u003e or \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#QRBASEG\" class=\"pt10link\"\u003eQRBASEG\u003c\/a\u003e) mounted to the predrilled holes on your AP refractor\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eAttach to a \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#9\" class=\"pt10link\"\u003e7\" sliding bar (SB0800) \u003c\/a\u003eto be used on the\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#15\" class=\"pt10link\"\u003eTraveler Accessory Plate (ACPLTR)\u003c\/a\u003e or an \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#7\" class=\"pt10link\"\u003e8\" Dovetail Plate (DOVE08)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eAttach to the \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#17\" class=\"pt10link\"\u003eLosmandy D Series Dovetail adapter(LMDVA)\u003c\/a\u003e on the\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#sbd12\" class=\"pt10link\"\u003e12\" Dovetail for Losmandy D Series Style plates (SBD12)\u003c\/a\u003eor any Losmandy D Series plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe bracket assembly includes the bracket ring, alignment screws, and male dovetail base.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis assembly, with your finderscope, slips into the groove of the base and tightens quickly with two thumbscrews. Now you are ready to go. There are no mounting screws to get lost in the grass or snow and your fingers won't freeze as you struggle with tools. This accessory is a must!\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eYou may want to consider purchasing extra bases that you can mount permanently on your other telescopes. This will allow you to use the same bracket and finder interchangeably. Now you can attach and detach your finder in seconds while retaining the alignment. \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight:  5.3 oz (0.15 kg)\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31557825542,"sku":"S1060QRM","price":176.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/S1060QRM.jpg?v=1477088493"},{"product_id":"10-x-60-vario-finder-with-quick-release-guider-bracket-kit-1060vgkit","title":"10 x 60 Vario-Finder with Quick Release Guider Bracket Kit (1060VGKIT)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe Astro-Physics designed Guider Bracket greatly expands the versatility and functionality of the Baader 10 x 60 Vario-Finder Scope.  By removing the Finder Scope’s 45° prism and reticle-eyepiece and substituting T-2 extension tubes, the finder transforms into a straight-through guidescope.  This unique Guider Bracket provides the robust, flexure-free structure to hold even the heaviest guide cameras.   Whether you use a feather-light camera, such as the SBIG ST-i, QHY5L-II and Starlight Xpress Lodestar, or a heavy-weight, such as the SBIG SG-4, this Guider Bracket will help you master autoguiding.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAn enlarged \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#qrbaseg\" class=\"pt10link\"\u003eQuick-Release Base (QRBASEG)\u003c\/a\u003e\u003cspan\u003e provides the rigid foundation on which the bracket rests.  The male dovetail base-rail allows the bracket to be positioned for proper balance, while providing an attachment point for the stabilizing guide ring.  The guide ring is the key to rigidly holding the focuser’s draw tube and the guide camera flexure-free.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eStarting in early October of 2013, we started to ship bases that were approximately 3\/8\" (9.5 mm) taller, so that the guide bracket rail will more easily clear the mounting rings of our refractors. This will allow the scope to rotate without interferance.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eAs your Astro-Physics mount precisely tracks around the sky, the protective felt lining of your telescope’s rings can allow a minute amount of scope flexure, affecting the otherwise perfect star shapes.  Because this entire guidescope configuration is attached directly to your telescope (rather than the scope’s rings), guiding will follow your scope’s movement, not that of the scope’s rings and mounting plates.  This will ensure that you get the imaging results you seek.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe Guider Bracket rail can be directly attached to many Vixen-style and D-style universal dovetail plates for mounting convenience. \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/Guider%20Rail%20A3247-A.pdf\" target=\"_blank\" class=\"pt10link\"\u003eSee this link for the attachment hole pattern.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cem\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/Guider%20Bracket%20dimension.pdf\" target=\"_blank\" class=\"pt10link\"\u003ePlease click this link for a clearance diagram.\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan\u003eThe Second image shows the SBIG ST-i used as a guide camera. It is a very light weight camera configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan class=\"pt10arial\"\u003eThe third image shows a heavier SBIG ST-402 camera being used as a guide camera. Inspite of the weight, the Guider Bracket rigidly supports the drawtube without flexure. Using an SBIG SG-4 Stand-alone Autoguider and a DSLR on the main scope makes for a superb, computer-free imaging setup!\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cspan\u003e\u003cspan class=\"pt10arial\"\u003eSpecifications\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cstrong\u003eVario-Finder and Guider Bracket Kit includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pt10arial\"\u003e10 x 60 Baader Vario-Finder, includes the Finder's 45° erecting prism and reticle eyepiece for use as a finder.\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e10 x 60 Quick Release Guider Bracket \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#S1060QRGB\" class=\"pt10link\"\u003e(S1060QRGB)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eBase for Quick Release Guider Bracket \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#QRBASEG\" class=\"pt10link\"\u003e(QRBASEG)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eT-2 Extension Tubes - 40 mm \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#BP25B\" class=\"pt10link\"\u003e(BP25B)\u003c\/a\u003e and 15 mm \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#BP25B\" class=\"pt10link\"\u003e(BP25A)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31559102086,"sku":"1060VGKIT","price":755.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Guide-Bracket-Kit.jpg?v=1477095541"},{"product_id":"10-x-60-quick-release-guider-bracket-s1060qrgb","title":"10 x 60 Quick Release Guider Bracket (S1060QRGB)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eIf you already own the \u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#1060vq\" class=\"pt10link\"\u003eBaader 10 x 60 Vario- Finder (1060VQ)\u003c\/a\u003e\u003cspan\u003e, or a similar size guidescope, then this Guider Bracket will be perfect for improving your autoguiding technique.  It is lightweight, yet provides a flexure-free mounting configuration that removes the problem of flexure in your guide scope’s focuser. The bracket is shown with the QRBASEG, purchased separately.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Guider Bracket can also be used with any guidescope that has a body length of at least 3 1\/4\"  (83 mm) and a diameter between 2 1\/4\" (60 mm) and 2 5\/8\" (67 mm), allowing room for adjustability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#qrbaseg\" class=\"pt10link\"\u003eBase for Quick Release Guider Bracket (QRBASEG)\u003c\/a\u003e, shown with the bracket, is the recommended attachment method so that guiding will follow your scope’s movement, not that of the scope’s rings and mounting plate.  However, the dovetail base-rail has ¼\"-20 tapped holes for attaching to our 7\" and 10\" Sliding Bars (SB0800 and SB1000), our 15\" Sliding Bar (SB1500), a Losmandy Adapter (LMDVA), or to many D-style and Vixen-style universal dovetail plates should these mounting methods be necessary. \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/Guider%20Rail%20A3247-A.pdf\" class=\"pt10link\"\u003eSee this link for the attachment hole pattern.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cem\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/Guider%20Bracket%20dimension.pdf\" target=\"_blank\" class=\"pt10link\" rel=\"noopener noreferrer\"\u003ePlease click this link for a clearance diagram.\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eAdditional accessories needed may include a \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#bp25b\" class=\"pt10link\"\u003e40 mm T-2 Extension Tube (BP25B)\u003c\/a\u003e and\/or a \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/photo_acc.htm#bp25b\" class=\"pt10link\"\u003e15 mm T-2 Extension Tube (BP25A)\u003c\/a\u003e, depending on the guidescope and camera you use.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eWeight: 9.9 oz. (.28 kg)\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31559189702,"sku":"S1060QRGB","price":271.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Guider-Bracket.jpg?v=1477095762"},{"product_id":"baader-fluorite-flatfield-converter-barlow","title":"Fluorite Flatfield Converter Barlow (BPFFC)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Baader Fluorite Flatfield Converter was designed by a top German optical inventor to cover up to a 6x7 cm format at magnifications up to 8x. The 4-element fluorite design provides a diffraction-limited, apochromatic flat field over a 90 mm image circle. It produces a sharp, color-free image for any projection photography need. It can be coupled to 35 mm cameras, 6x7 cameras (adapters are available for various camera models), as well as any CCD camera using 1.25\" or 2\" nosepieces or threaded custom adapters. The BPFFC also can be used visually for critical high-power lunar\/planetary\/double star viewing.\u003c\/p\u003e\n\u003cp\u003eThe fluorite lenses do not add any chromatic aberrations or other optical defects to the image. The lenses are corrected from deep violet to the IR regions, and present an excellent match to the new extended-wavelength CCD cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe BPFFC is fully multi-coated with a hard 7-layer design, each layer exactly matched to the material index. The result is very high transmission while suppressing stray light. Looking into the front of the lenses shows a black tube with the elements barely visible as shown in the photo. All optical surfaces are polished to the highest optical standards of 1\/10 wave accuracy, in order not to disturb the incoming wavefront from your telescope's optics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/Baader%20Warning.pdf\" target=\"_new\"\u003e\u003cimg src=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/Warranty-Notice.jpg\" alt=\"warranty\" width=\"200\" height=\"26\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31640247430,"sku":"BPFFC","price":793.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/ffc_side_c.jpg?v=1477502789"},{"product_id":"ffc-basic-set-and-extensions","title":"FFC Basic Set and Extensions","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/ffc_skizze_engl.pdf\" target=\"_new\" class=\"pt10link\"\u003eThe FFC System\u003c\/a\u003e (also known as the Astro T-2 System) offers a wide array of adapters to suit a variety of needs (also see: \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/ffc_combinations.pdf\" target=\"_new\" class=\"pt10link\"\u003eStandard FFC Combinations\u003c\/a\u003e). Astro-Physics has also manufactured a 2\"\/T-2 Adapter with brass locking ring (ADAT2) to simplify the system (it takes the place of several components). The Basic Set couples the 2\"\/T-2 Tapered Nosepiece (AP16T) to the front of the BPFFC optic and the 2\"\/T-2 Adapter with brass locking ring (ADAT2) to the back, allowing a simple method for using visual and photographic accessories.\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan face=\"Arial\" size=\"2\" color=\"black\"\u003e\u003cimg src=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/ffc\u0026amp;adas.jpg\" width=\"216\" height=\"77\" hspace=\"10\"\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"pt10arial\"\u003eShown from left to right:\u003cbr\u003e\u003cspan class=\"pt10arialbold\"\u003eAP16T\u003c\/span\u003e - 2\"\/T-2 Tapered Nosepiece (fits into 2\" openings). This item helps you to come to focus when the FFC is inserted directly into your refractor or SCT (not used for Newtonians). \u003cbr\u003e\u003cspan class=\"pt10arialbold\"\u003eBPFFC\u003c\/span\u003e - Fluorite Flatfield Converter Barlow \u003cbr\u003e\u003cspan class=\"pt10arialbold\"\u003eADAT2\u003c\/span\u003e - 2\"\/T-2 Adapter with brass locking ring (manufactured by Astro-Physics, not shown on FFC System diagrams)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBP25A - T-2 Extension Tube, 15 mm long\u003c\/li\u003e\n\u003cli\u003eBP25B - T-2 Extension Tube, 40 mm long\u003c\/li\u003e\n\u003cli\u003eBP25C - T-2 Extension Tube, 7.5 mm long\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cspan class=\"producthead\"\u003eAchieving Various Magnifications with the BPFFC\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe magnification of the BPFFC will vary depending on the distance to the focal plane behind the Barlow. As the spacing increases, so does the magnification. However, remember that as you increase the spacing (magnification) you also will need to shift the BPFFC forward in the focuser. The amount of in-travel available becomes a consideration as you reach towards the higher magnifications. The following is a list of the magnifications and the back spacing required: 2x = 42 mm, 3x = 96.2 mm, 4x = 150 mm, 5x = 206.4 mm, 6x = 259 mm, 7x = 314 mm, 8x = 368 mm.\u003c\/p\u003e\n\u003cp\u003eLink to \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/bpffc.pdf\" target=\"_blank\" class=\"pt10link\" pt10link=\"\"\u003eBPFFC Magnification Explanation\u003c\/a\u003e.\u003cbr\u003eLink to \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/photo_acc\/BARCON%20\u0026amp;%20BPFFC.pdf\" target=\"_new class=\" class=\"pt10link\" pt10link=\"\"\u003eBARCON \u0026amp; BPFFC Magnification Graph\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arialbold\"\u003eVisual\u003c\/span\u003e\u003cbr\u003eWhen using the Astro-Physics Maxbright Diagonal, we suggest one of the following configurations:\u003c\/p\u003e\n\u003cp\u003eBasic Set: AP16T (2\"\/T-2 nosepiece) + BPFFC (FFC) + ADAT2 (Astro-Physics 2\"\/T-2 adapter)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAP16T\u003c\/li\u003e\n\u003cli\u003eBPFFC\u003c\/li\u003e\n\u003cli\u003eADAT2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"producthead\"\u003e\u003cstrong\u003eor\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFFC system components: BP16 (T-2 nosepiece) + BP6\/7 (T-2 changer system) + BPFFC (FFC) + BP28 (expanding ring) + BP17 (2\" adapter) \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBP6\/7\u003c\/li\u003e\n\u003cli\u003eBP28\u003c\/li\u003e\n\u003cli\u003eBP17\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMagnifications as low as 2x can be achieved by placing either the “Basic Set\" or the “FFC System Components\" into the AP Maxbright Diagonal and then adding the eyepiece. The magnification will vary somewhat with eyepiece design.\u003c\/p\u003e\n\u003cp\u003eUsing either the \"Basic Set\" or the \"FFC System Components\" in front of the AP Maxbright Diagonal will yield approximately 4x magnification. Various extension tubes can be added to increase the magnification to 8x, assuming that your telescope focuser has sufficient in-travel to allow this configuration to achieve focus.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arialbold\"\u003ePhotographic\u003c\/span\u003e\u003cbr\u003eDSLR\/SLR cameras have a 55 mm spacing distance to the film\/sensor plane when using a T-ring system. The lowest magnification of approximately 2x is achieved by threading a standard T-ring directly to the back of the BPFFC body (without a 2\" adapter).\u003c\/p\u003e\n\u003cp\u003e3x to 8x magnifications are achieved by adding 50 mm to 320 mm. It is recommended to use the \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/ffc.htm#a3511\" class=\"pt10link\"\u003eA3511\u003c\/a\u003e and \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/focus_adap\/focus_adap.htm#a3503\" class=\"pt10link\"\u003e2.7\" extension tubes\u003c\/a\u003e to achieve these lengths. As above, this assumes that your telescope focuser has sufficient in-travel to allow this configuration to achieve focus.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arialbold\"\u003eCCD Camera\u003c\/span\u003e\u003cbr\u003eThe FFC system allows you to achieve various magnifications with your CCD Camera. If you thread the BPFFC directly into your camera (without the 2\" nosepiece or with a custom low profile adapter) the lowest possible magnification will be approximately 2x.\u003c\/p\u003e\n\u003cp\u003eSimilarly, 3x to 8x magnifications are achieved by adding 50 mm to 320 mm. It is recommended to use the \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/ffc.htm#a3511\" class=\"pt10link\"\u003eA3511\u003c\/a\u003e and \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/focus_adap\/focus_adap.htm#a3503\" class=\"pt10link\"\u003e2.7\" extension tubes\u003c\/a\u003e to achieve these lengths. Again, it is assumed that your telescope focuser has sufficient in-travel to allow this configuration to achieve focus.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTips for Using the FFC System with Various Telescopes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arialbold\"\u003eSchmidt-Cassegrains\u003c\/span\u003e\u003cbr\u003eThere are several options for attaching the BPFFC to your telescope.\u003c\/p\u003e\n\u003cp\u003eBasic Set: If you have an 8 or 9.25\" SCT, use our \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/focus_adap\/focus_adap.htm#8\" class=\"pt10link\"\u003eADASCT\u003c\/a\u003e, which was designed for 2\" slip-in accessories and features our brass locking ring. We have also developed the \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/focus_adap\/focus_adap.htm#adasctl\" class=\"pt10link\"\u003eADASCTLC\u003c\/a\u003e\u003cspan class=\"pt10arial\"\u003e and \u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/focus_adap\/focus_adap.htm#adasctl\" class=\"pt10link\"\u003eADASCTLM\u003c\/a\u003e, which are larger versions designed for SCTs that are 10\" or larger. This adapter takes advantage of the 3.25\" opening of these scopes. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eADASCT\u003c\/li\u003e\n\u003cli\u003eADASCTLC\u003c\/li\u003e\n\u003cli\u003eADASCTLM\u003c\/li\u003e\n\u003c\/ul\u003e\nFFC System: If you prefer to thread the FFC System components directly onto your visual back, you can use BP21 (2\" SCT Short T-adapter for the standard visual back) or BP18 (adapter for the larger SCTs).\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBP18\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBP21\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"pt10arialbold\"\u003eNewtonians\u003c\/span\u003e\u003cbr\u003eWhen inserted into a 2\" focuser on a Newtonian telescope, the Baader FFC Barlow will require an additional 1 inch of in-travel to allow focus at 2x magnification. More travel is required for higher powers. To use, slip the FFC directly into your focuser. Tighten the focuser screw on the smooth surface of the FFC between the ridges. You will also need our ADAT2 (and possibly a 1.25\" adapter) for your eyepiece.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eADAT2\u003c\/li\u003e\n\u003cli\u003eBPFFC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/baader.htm\" class=\"pt10link\"\u003eAdditional products from Baader Planetarium\u003c\/a\u003e","brand":"Baader Planetarium","offers":[{"title":"ADAT2","offer_id":31640296454,"sku":"ADAT2","price":63.0,"currency_code":"USD","in_stock":true},{"title":"BP25A","offer_id":31640296518,"sku":"BP25A","price":35.0,"currency_code":"USD","in_stock":true},{"title":"BP25B","offer_id":31640296582,"sku":"BP25B","price":38.0,"currency_code":"USD","in_stock":true},{"title":"BP25C","offer_id":31640296646,"sku":"BP25C","price":25.0,"currency_code":"USD","in_stock":true},{"title":"BP17","offer_id":31640706566,"sku":"BP17","price":64.0,"currency_code":"USD","in_stock":true},{"title":"BP18","offer_id":31640711750,"sku":"BP18","price":55.0,"currency_code":"USD","in_stock":true},{"title":"BP21","offer_id":31640717190,"sku":"BP21","price":57.0,"currency_code":"USD","in_stock":true},{"title":"BP28","offer_id":31640725574,"sku":"BP28","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/ffc_adas_ext.jpg?v=1477503097"},{"product_id":"mark-v-binocular-viewer-from-baader-planetarium-and-optional-case-bpmarkvs","title":"Mark V Binocular Viewer and Optional Case (BPMARKVS)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe Mark V Binocular Viewer is the culmination of years of research and development, originally by Carl Zeiss Jena and further advanced by Baader Planetarium. It combines all the best features to provide a superb viewing experience: optical quality, critical colimation, high transmission coatings and diopter adjustment to individually focus each eye. \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIf you own the previous Giant Binocular Viewer (BPBINOV) model and need information, please \u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/bino.htm\" target=\"_blank\" class=\"pt10link\"\u003eclick here\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"producthead\"\u003eFeatures\u003c\/h3\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eClickLock Eyepiece Clamps\u003c\/span\u003e - The ClickLock mechanism grips your eyepiece firmly using a 3-point contact that accurately centers each eyepiece. Insert the eyepiece and lock it in place with a gentle twist of the outer locking ring (just two tenths of a full turn). The clamp applies gentle, even pressure to lock the eyepiece in place and centered. Please refer to additional information from Baader Planetarium regarding the new \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/clicklock2.pdf\" target=\"_new\" class=\"pt10link\"\u003eClickLock\u003c\/a\u003e feature.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eDiopter Adjustment\u003c\/span\u003e - You can now achieve perfect focus for each eye with the silky smooth microfocusing collar, which allows 8mm of focus travel. Please refer to additional information from Baader Planetarium regarding this new \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/clicklock2.pdf\" target=\"_new\" class=\"pt10link\"\u003eClickLock\u003c\/a\u003e feature.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eDielectric Coating of Prisms\u003c\/span\u003e - The dielectric coating increases throughput by 8.9% from previous models. The coatings were carefully matched to the index of the glass used for the prisms. They allow maximum transmission at 510nm - exactly where the dark accommodated eye has its maximum sensitivity. This is especially important for night vision.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eMirror Diagonal\u003c\/span\u003e - The Baader T-2 Mirror Diagonal features durable, 99% reflective Maxbright dielectric coatings. Its compact size allows the shortest possible light path. It is also part of the T-2 system, allowing a variety of configurations. The mirror diagonal offers the same optical performance as the prism diagonal that was offered prior to December 2011.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eInterocular Separation Adjustment\u003c\/span\u003e - Adjusting the eyepiece spacing does not affect focus. The interocular distance can be adjusted from 55mm to 75mm.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eRemovable 1.25x Compensating Optical Element\u003c\/span\u003e - This optical element eliminates the slight color error and spherical aberration that a prism beam splitter naturally introduces into the light path of all binocular viewers. It allows you to enjoy wide-field, low-power views of deep-sky objects, as well as high powers. This element (also known as a Glasspath Compensator) was designed by Roland Christen of Astro-Physics and is essential for telescopes with fast focal ratios. Baader Planetarium was the first to introduce this feature for the binocular viewer. We also offer the 1.7x (BP4B) and the 2.6x (BP4C) Glasspath Compensators and the 2\" 1.8x Glasspath Corrector for Refractors and SCTs (BPRSGC18) to provide higher magnifications. A 2\" 1.7x Glasspath and Coma Corrector for Newtonians (BPNGCC17) is also available. [See this link for \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/Binoviewer%20Glasspath%2012-20-11.pdf\" target=\"_blank\" class=\"pt10link\"\u003eGlasspath Compensator Placement\u003c\/a\u003e.] One of these optics should always be part of the optical path of telescopes with fast focal ratios unless a BARADV or BPFFC is used.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan class=\"pt10arialbold\"\u003eQuality custom case\u003c\/span\u003e - Your investment is well protected in a high-quality custom foam-lined case.   The case is included with Mark V Binoviwers shipping since September 2014 and is available as a separate accessory (BPMARKV-CASE) for previously shipped Binoviewers.\u003c\/p\u003e\n\u003ch2\u003e\u003cspan class=\"producthead\"\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003eClear Aperture: 1.1\" at the prism entrance w\/o the compensator and 0.96\" with the compensator. \u003cbr\u003eWeight: 2.25 lbs with Mirror or Prism Diagonal and 2\" Nosepiece\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"producthead\"\u003eIncludes:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"pt10arial\"\u003eMark V Binocular Viewer\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e1.25x Compensating Element (BP4A)\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eT-2 Mirror Diagonal (BP1A)\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e2\" Tapered Nosepiece (AP16T)\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eCustom Case (BPMARKV-CASE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003e\u003cb\u003eIMPORTANT:\u003c\/b\u003e If you are using the thin 2\" adapter (ADA2013) or the 92mm f5 or f7 Stowaway, you should \u003cspan class=\"pt10arialbold\"\u003enot\u003c\/span\u003e use the AP16T nosepiece since the brass ring of these parts do not grab onto the AP16T securely. You can upgrade to the new thin 2\" adapter (ADA20132), or alternately, you can use the 2\" nosepiece from Baader Planetarium (part # BP16), which must be purchased separately.\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Mark V","offer_id":31640980166,"sku":"BPMARKVS","price":2175.0,"currency_code":"USD","in_stock":true},{"title":"Replacement BPA1","offer_id":31640980294,"sku":"BPA1","price":275.0,"currency_code":"USD","in_stock":true},{"title":"Replacement BP4A","offer_id":31640980358,"sku":"BP4A","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpmarkv.jpg?v=1477506024"},{"product_id":"visual-narrowband-o-iii-filter","title":"Visual Narrowband O-III Filter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"producthead\"\u003eVisual Narrowband O-III Filter - 1.25\" (BPO3125) and 2\" (BPO32)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe \u003cspan class=\"pt10arialitalic\"\u003enon plus ultra\u003c\/span\u003e for visual deep-sky observers, especially under extremely light-polluted skies. See planetary nebulae and supernova remnants come alive with the enhanced contrast from these filters.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eAmong the narrowest transmission band O-III filters on the market, ideally suited for both visual use and for many imaging applications thanks to its unsurpassed contrast. No image degradation is perceptible even at the highest magnifications. Features the same ultra-hard, extremely durable vacuum-deposited dielectric coatings employed on the UHC-S filter.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe Baader Visual O-III Filter effectively blocks the entire visual spectrum with the exception of the two closely paired emission lines from doubly ionized oxygen, eliminating the annoying colored halos surrounding stars that often appear through O-III filters manufactured by means of less sophisticated coating technology. We also offer two additional versions of this filter with extended infra-red blockage for many of today's IR sensitive CCD chips - in a \u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/baaderfilters.htm#bpo3285\" class=\"pt10link\"\u003e2\" mounted\u003c\/a\u003e and in a \u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/baaderfilters.htm#bpstl\" class=\"pt10link\"\u003e50.8 mm unmounted configuration for the STL series of cameras\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpo3graph.pdf\" target=\"_new\" class=\"pt10link\"\u003eTransmission Curve\u003c\/a\u003e - PDF document\u003cbr\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpo3_filtercurve.gif\" class=\"pt10link\"\u003eExtended Transmission Curve\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31641737670,"sku":"BPO3125","price":90.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31641737734,"sku":"BPO32","price":207.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpo32__84634.1548989138.jpg?v=1647044184"},{"product_id":"baader-premium-colored-glass-filters","title":"Premium Colored Glass Filters","description":"\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eBaader 1.25\" and 2\" Premium Colored Glass Filters (BPCF125)(BPCF2)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"pt10arial\"\u003eThese premium 1.25\" (BPCF125) and 2\" (BPCF2) color filters from Baader Planetarium feature high-transmission, plane-parallel, optically polished glass, multi-coated with 7 layers on each surface. True plane-parallel surfaces eliminate ghost images at the eyepiece. The fine optical polish allows the filters to be inserted anywhere in the optical path without introducing astigmatism and other defects. Thus, they can be used with the Baader Giant Binocular Viewer or other similar products without concern about degradation of your image. All of these features assure fine planetary detail while preserving maximum sharpness and contrast in the image.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eBoth the 1.25\" and 2\" sets comprise three longpass and three genuine bandpass filters, which allow only a small portion of the visual spectrum to be transmitted in order to emphasize certain planetary surface detail.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eFilters come in the following colors: Red (610nm), Orange (570nm), Green (500nm), Yellow (495nm), Blue (470nm) and Blue-Violet (435nm). The filters are only available in the U.S. in sets containing all six color filters.\u003c\/p\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFine-polished, plane-parallel glass\u003c\/span\u003e - eliminates any double images or ghosting due to wedge errors in the glass. The glass is polished to within 30 seconds of arc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003e7-layer multi-coat\u003c\/span\u003e- features a mere 0.25% residual reflection, resulting in a filter free of any reflections of light at any angle. This prevents the softening effect of scattered light and loss of detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eVery high light transmission\u003c\/span\u003e - allows the subltest planetary surface detail to be detected at high magnifications. Transmission efficiencies for the three longpass filters (Red, Orange and Yellow) peaks at approximately 98%, while the efficiency for the three bandpass filters peaks at almost 70%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFilter cell design\u003c\/span\u003e - large clear aperture with no vignetting. The unique milled notches at the edge of the filter make it easy to grasp and turn, especially appreciated in the dark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eCombine filters\u003c\/span\u003e\u0026gt; - All filters have standard 1.25\" or 2\" (48 mm) eyepiece filter threads and can be threaded together to allow stacking for narrower passbands. For instance, combining the Yellow filter with the Blue-Violet filter results in a very narrow dark green filter that transmits light only from 475nm to 500nm. You can also combine the color filters with other filters. We recommend the yellow filter with the Neodymium Moon \u0026amp; Skyglow filter to boost the contrast on Mars. When stacking filters on eyepieces, be careful that the eyepiece barrel, with the filters attached, does not strike the mirror or prism of your diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pt10arial\"\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpcf125.pdf\" target=\"_new\" class=\"pt10link\"\u003eProduct description from Baader Planetarium\u003c\/a\u003e - PDF file. The \"TOOLS but Toys\" header was intended to mean \"It takes tools, not toys - for real achievement.\"\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31642010566,"sku":"BPCF125","price":319.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31642010630,"sku":"BPCF2","price":476.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/colorfilterslarge.gif?v=1477508036"},{"product_id":"contrast-booster-filter","title":"Contrast-Booster Filter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eContrast-Booster Filter - 1.25\" (BPCB125) and 2\" (BPCB2)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eA unique filter for many different astronomical tasks – incomparable in acuity to combinations of generic color filters, made of raw polished glass – where surface inaccuracy adds up in the optical wave front to an unbearable degree! Especially designed to improve the ubiquitous beginners telescopes – to provide a professional replacement for the simple „dark green“ Moon \u0026amp; Solar-Filters made of „raw polished“ glass. (Note: for solar observation use only in combination with Baader AstroSolar Safety Film!)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEliminates the color error of economy Refractors\u003c\/li\u003e\n\u003cli\u003eClearly puts the real quality of the lens on display\u003c\/li\u003e\n\u003cli\u003eRemoves the bluish „hue“ (= lack of contrast) during lunar-, planetary-, solar- and terrestrial observation!\u003c\/li\u003e\n\u003cli\u003eStrongly emphasizes surface detail on Jupiter and Mars! If you have never seen the GRS (Great Red Spot) on Jupiter – with this filter you will!\u003c\/li\u003e\n\u003cli\u003eOver 95% transmission – provides a bright, brilliant image compared to the usual dark green color filters, used to bring out detail on Jupiter Color recognition will be retained!\u003c\/li\u003e\n\u003cli\u003eThe ultimate in lunar filters! Moon (and Sun!) appear much more natural in color (with a slight yellowish tint), compared to the usual low priced dark green Moon-filters, usually offered for beginners telescopes.\u003c\/li\u003e\n\u003cli\u003eCompletely removes distracting false color and the resulting smeared and washed out image details. You have never ever seen the Moon or the Sun (with AstroSolar Safety Film) so tack sharp in an economy priced telescope!\u003c\/li\u003e\n\u003cli\u003eBlocks atmospheric „stray light“ (skyglow). Sky-background turns into pitch black!\u003c\/li\u003e\n\u003cli\u003eFits each and every standard filter thread;\u003c\/li\u003e\n\u003cli\u003eCombines with the (plane optically polished) BAADER Infrared Cut-Filter. In this combination all blue scatter as well as unfocused near infrared light is completely removed – an absolute MUST for digital imaging!\u003c\/li\u003e\n\u003cli\u003ePlane Optically polished, suitable for being used in front of a binocular viewer, or for afocal image projection during digital imaging (way in front of the focal plane!)\u003c\/li\u003e\n\u003cli\u003eNo deterioration of resolution with magnifications of 200 x and more – as with \"raw polished“ (flame polished) glass!\u003c\/li\u003e\n\u003cli\u003eSubstrate (glass melt) Neodymium doped glass\u003c\/li\u003e\n\u003cli\u003eCoating\/rear face: 7-layer hard-multi-coating, featuring 0,25% refl ection\u003c\/li\u003e\n\u003cli\u003eCoating\/front face: 23-layer dielectric long pass blocker\u003c\/li\u003e\n\u003cli\u003eIon Beam hardened coatings on both faces, absolutely scratch resistant – may be cleaned any time without fear\u003c\/li\u003e\n\u003cli\u003eA significant part of City Light Air Pollution, as well as Atmospheric Airglow is removed from the telescopic image.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpcbgraph.pdf\" target=\"_new\" class=\"pt10link\"\u003eTransmission Curve\u003c\/a\u003e\u003cspan\u003e - PDF document\u003c\/span\u003e\u003cbr\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/skyglow_graph\/bpms_filtercurve.gif\" class=\"pt10link\"\u003eExtended Transmission Curve\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31642312134,"sku":"BPCB125","price":99.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31642312262,"sku":"BPCB2","price":171.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpcb.jpg?v=1477508469"},{"product_id":"baader-neodymium-moonglow-skyglow-filter","title":"Neodymium (\"Moonglow \u0026 Skyglow\") Filter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis filter was designed to transmit the maximum amount of incoming light, while suppressing skyglow due to artificial lighting and background glow when the Moon is up. The filter material is a special Neodymium glass that effectively filters out selective wavelengths of low-pressure sodium and other manmade sources. Although it is not a nebula filter, it enhances the views of deep-sky galaxies and nebulae by increasing the contrast of these objects against the background sky. While nebula filters transmit only a few select wavelengths corresponding to various atomic lines, this filter transmits a large portion of the continuous spectrum, while blocking a few select lines of the more common manmade light.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis filter can also be used for lunar\/planetary viewing. It increases planetary contrast and works especially well on Jupiter and Mars to help bring out subtle detail. Try it with the yellow filter of the Baader Premium 1.25\" Colored Filter Set to bring out the surface features of Mars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eNeodymium\u003c\/span\u003e - unique, selective, blocking feature of the Neodymium element greatly reduces glare without reducing important color and brightness variations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFine-polished, plane-parallel glass\u003c\/span\u003e - eliminates any double images or ghosting due to wedge errors in the glass. As a result, it can be used in front of CCD cameras or high-power eyepieces without introducing optical defects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eMulti-layer coatings on both surfaces\u003c\/span\u003e - ultrahard and durable ion-beam hardened coatings, may be cleaned anytime without fear. Note: the 2\" filter has a very hard, single layer MgF2 coating (Zeiss T coating). (See the \u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/cleaningproducts\/cleaningsystem.htm\" class=\"pt10link\"\u003eAstro-Physics Optical Cleaning System (OPTCS)\u003c\/a\u003e with its detailed \u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/cleaningproducts\/optcs-instructions.pdf\" class=\"pt10link\"\u003einstructions\u003c\/a\u003e.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eVery high light transmission\u003c\/span\u003e - while blocking unwanted skyglow and many street light emissions. Transmission within the selected wave bands exceeds 95%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFilter cell design\u003c\/span\u003e - large, clear aperture with no vignetting. The unique milled notches at the edge of the filter make it easy to grasp and turn, especially appreciated in the dark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eCombine filters \u003c\/span\u003e- standard 1.25\" or 48 mm (2\") eyepiece filter threads. It can be threaded onto other filters to allow stacking for narrower passbands. We recommend adding the yellow filter from the Baader Premium 1.25\" or 2\" Colored Filter Set to boost the contrast on Mars. When stacking filters on eyepieces, be careful that the eyepiece barrel, with the filters attached, does not strike the mirror or prism of your diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pt10arial\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpmsgraph.pdf\" class=\"pt10link\"\u003eTransmission Curve\u003c\/a\u003e\u003cspan\u003e - PDF document \u003c\/span\u003e\u003cbr\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/skyglow_graph\/bpms_filtercurve.gif\" class=\"pt10link\"\u003eExtended Transmission Curve\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31642463494,"sku":"BPMS125","price":99.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31642463558,"sku":"BPMS2","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/neodymiumboth.jpg?v=1477508735"},{"product_id":"2-neutral-density-1-8-filter-bpnd18","title":"2\" Neutral Density Moon Filter (BPND18)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003eThis 2\" filter is threaded for 48 mm metric threads. It has a transmission rate of 1.8%, making it an ideal moon filter for large aperture instruments. Use this filter with the AstroSolar Density 3.8 Film for safe solar observation.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eIMPORTANT! Do not attempt to use this filter without a white-light filter in front of your main telescope optics. While it will supplement the ND 3.8 Photographic Density filter material to yield a safe combined transmission level, it is wholly insufficient by itself for solar viewing. Serious damage to your eyes could result from improper use of solar filters!\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31642711046,"sku":"BPND18","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpnd18__84367.1549237704.jpg?v=1558133598"},{"product_id":"polarizing-filter-1","title":"Polarizing Filter","description":"\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan class=\"producthead\"\u003ePolarizing Filter - 1.25\" (BPPOL125) and 2\" (BPPOL2)\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"pt10arial\"\u003eA polarizing filter is an excellent filter choice for lunar viewing. It provides variable neutral density (it darkens or lightens) as it is rotated, accomodating the different lunar stages. This filter is a single stage polarizing filter and must be used with a diagonal mirror, such as our \u003ca href=\"http:\/\/cloudbreakoptics.com\/products\/maxbright-diagonal-pmdmax\" class=\"pt10link\" target=\"_blank\"\u003eMaxBright Diagonal (PMDMAX)\u003c\/a\u003e, to achieve the polarizing affect. This polarizer can similarly be used with a \u003ca href=\"http:\/\/cloudbreakoptics.com\/products\/baader-cool-ceramic-safety-herschel-prism-for-refractors-bpherp\" class=\"pt10link\" target=\"_blank\"\u003eHerschel Prism (BPHERP)\u003c\/a\u003e for solar viewing, but must always be used in addition to the ND3.0 filter (the ND3.0 filter must always remain in the Herschel Prism for viewing safety). When either lunar or solar viewing, the filter can be screwed onto the barrel of a 2\" eyepiece or onto our \u003ca href=\"http:\/\/cloudbreakoptics.com\/products\/1-25-adapter-ada125\" class=\"pt10link\" target=\"_blank\"\u003e1.25\" Eyepiece Adapter (ADA125)\u003c\/a\u003e. Note that in the case of our ADA125, you may need to add our \u003ca href=\"http:\/\/cloudbreakoptics.com\/products\/2-barrel-extension-w-48-mm-threads-a3703\" class=\"pt10link\" target=\"_blank\"\u003e2\" Barrel Extension (A3703)\u003c\/a\u003e to accommodate 1.25\" eyepieces with extra long barrels.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31642831430,"sku":"BPPOL125","price":58.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31642831494,"sku":"BPPOL2","price":87.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Polarizing-Filter.jpg?v=1477509295"},{"product_id":"solar-continuum-filter","title":"Solar Continuum Filter","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAll sales of solar gear are final, so please choose your filter carefully and reach out with any questions.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis filter is available in 1.25\" (BPSC125-7.5) or 2\" (BPSC2-7.5) sizes.\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBaader 1.25\" Solar Continuum Filter, 7.5nm \/ CWL 540nm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eA must for owners of achromatic refractors. This filter cuts the spectral range transmitting a specific spectral range around 540nm, completely cutting out blue and red wavelengths in an area of the lens system that where the optics are at their sharpest.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eEnhances contrast and reduces the effect of atmospheric turbulence.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThis filter must be used in conjunction with a Baader Herschel Wedge or Baader AstroSolar Safety Film for solar observations otherwise eye or equipment damage may occur.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ePlaneoptically polished, non-ageing sealed coating edges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUnsurpassed contrast of photospheric details is achieved by an extremely narrow half bandwidth of only 8nm. Functions like a monochrometer, suppressing the effects of atmospheric turbulence to provide images that appear markedly more stable.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFocus \"Sweet Spot Generator\" - completely eliminates the usual focusing guesswork - the image snaps to a razor sharp focus at the exact focal position. Image the sun the way professionals do!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eVERY IMPORTANT: The Solar Continuum Filter MUST be used in conjunction with a visual density white-light solar filter or Herschel Prism (with ND3.0 filter) in front of the lens. We suggest AstroSolar ND 5.0 Visual Filter material, also from Baader Planetarium. If you prefer a ready-made filter, we suggest the Baader Planetarium ASSF, ASTF or ASBP solar filters or Kendrick solar filters, also constructed with AstroSolar Safety Film. DO NOT attempt to use this filter without a white-light filter in front of your main telescope optics. Serious damage to your eyes could result.\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eTransmission Curve\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"__mce_add_custom__\" title=\"bpsc-filtercurve.jpg\" src=\"https:\/\/cdn11.bigcommerce.com\/s-giucqvpdlm\/product_images\/uploaded_images\/bpsc-filtercurve.jpg\" alt=\"bpsc-filtercurve.jpg\" width=\"700\" height=\"366\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn11.bigcommerce.com\/s-giucqvpdlm\/product_images\/uploaded_images\/bpsc-filtercurve.jpg\"\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eSpectral Position By Color\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg class=\"__mce_add_custom__\" title=\"bpsc-spectral.jpg\" src=\"https:\/\/cdn11.bigcommerce.com\/s-giucqvpdlm\/product_images\/uploaded_images\/bpsc-spectral.jpg\" alt=\"bpsc-spectral.jpg\" width=\"700\" height=\"378\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn11.bigcommerce.com\/s-giucqvpdlm\/product_images\/uploaded_images\/bpsc-spectral.jpg\"\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31694251142,"sku":"BPSC125","price":127.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":31694330438,"sku":"BPSC2","price":213.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/BPSC2-7.5__71916.jpg?v=1704756250"},{"product_id":"2-venus-u-filter-bpu2","title":"2\" Venus U-Filter (BPU2)","description":"\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003eThe Baader Venus filter blocks the entire spectral region from 200nm to 1500nm except for a very narrow bandwidth from 300nm to 400nm in the far violet. Transmission efficiency reaches 80% at the peak. This filter makes it possible to image cloud detail on the surface of Venus.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e The Baader U-Filter is specifically for digital imaging (digital SLR, webcam or CCD). Since visual perception stops at about 400nm (380nm if you're lucky), the light transmitted through the filter is not detectable by the human eye. Do not purchase this filter for visual use! Also note that the colors in the photo at left are the true reflected colors of each side of the filter and are the result of the different dielectric coatings used on each surface.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003eThe accompanying photograph of Venus, taken by M. Rietze just 2 days before transit, shows the cusps enclosing two-thirds of the planet's circumference.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpu_filtercurve.gif\" class=\"pt10link\"\u003eExtended Transmission Curve\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31694585990,"sku":"BPU2","price":355.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpu2__85129.1549235170.jpg?v=1647043877"},{"product_id":"uv-ir-rejection-filter","title":"UV-IR Rejection Filter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003ch3\u003e\n\u003cspan class=\"producthead\"\u003eUV-IR Rejection Filter - 1.25\" (BPUVIR125) and 2\" (BPUVIR2)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp class=\"pt10arial\"\u003eThis filter is a must for all digital imaging with CCD cameras, digital cameras and webcams. Corresponds to the L (\"Luminance\") filter in an RGB filter set. Provides pinpoint stellar images.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eReflects deleterious infrared rays without heating, while providing 98% transmission over the entire visual spectrum. The plane-parallel polished substrate allows this filter to be employed at large distances from the focal plane, notably in binocular viewers and for eyepiece projection.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eExciting possibilities in combination with other filters! For example, when combined with the Solar Continuum Filter, the entire accessible electromagnetic spectrum is blocked with the exception of a narrow region around 540nm.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpuvir.pdf\" target=\"_new\" class=\"pt10link\"\u003eMore Information\u003c\/a\u003e - PDF document\u003cbr\u003e\u003ca href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpuvirgraph.pdf\" target=\"_new\" class=\"pt10link\"\u003eTransmission Curve\u003c\/a\u003e - PDF document\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":31694671750,"sku":"BPUVIR125","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpuvir.jpg?v=1477588630"},{"product_id":"baader-protective-t-ring-with-optional-built-in-filters","title":"Protective T-Ring with Optional Built in Filters","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eAlthough Baader officially calls this a T-ring, this bayonet offers far more. The Baader Protective T-Ring allows Canon EOS cameras to attach to standard 2\" eyepiece holders. It is optimized for full-frame sensor cameras (such as the Canon EOS 5D), but can be used with any EOS camera. Since it has a wider clear aperture than the restrictive T-ring (42 mm) size, it does not vignette the light cone of fast optics.  Whereas it utilizes a 48 mm thread, it also includes a 48 mm to 42 mm adapter for using traditional T-thread accessories.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBaader has optimized the fit and tolerances between the camera bayonet and T-ring. This ensures that its connection to the EOS camera is wobble-free and has no lateral play, thus guaranteeing a stable image platform for long exposures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the unique features of this “T-ring\" is that it accepts internal filters (optional).  Baader unmounted 50.4 mm or 50.8 mm and Baader low-profile 2\" mounted filters can be installed internally.\u003c\/p\u003e\n\u003cp\u003eYou may order this product without a filter or with a preinstalled filter for your convenience. You may purchase additional filters at a later date, if you wish. Choose the configuration that best suits your needs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Protective T-Ring with Nosepiece without filter - \u003cstrong\u003eBPEOS\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003eWithout any filter. You may purchase a filter separately at a later date.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eBaader Protective T-Ring with Nosepiece with UV-IR filter - \u003cstrong\u003eBPEOSL\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003eUV-IR filter preinstalled. \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/filters\/bpuvirgraph.pdf\" target=\"_new  class=\" pt10link=\"\"\u003eTransmission curve at this link\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eBaader Protective T-Ring with Nosepiece with H-alpha filter - \u003cstrong\u003eBPEOSH\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003eH-alpha filter preinstalled. Please note that using the H-alpha filter requires that the camera has been modified and its internal filter replaced with an expanded range filter. Modification is not needed for the Canon 20Da and 60Da cameras. \u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/filters\/bpha_filtercurve.jpg\" target=\"_new  class=\" pt10link=\"\"\u003eTransmission curve at this link\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAn additional benefit of these filters is to offer dust and moisture protection for your camera’s sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eParts Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eProtective T-Ring for CANON EOS body\u003c\/li\u003e\n\u003cli\u003eBaader UV-IR, UHC-S or H-alpha filter (optional)\u003c\/li\u003e\n\u003cli\u003eTemperature compensation ring (to prevent filter damage at high temperatures)\u003c\/li\u003e\n\u003cli\u003eS52\/M48 adapter ring (M48 corresponds to the international 2\" Astro filter thread)\u003c\/li\u003e\n\u003cli\u003eM48\/T-2 insert ring\u003c\/li\u003e\n\u003cli\u003eS52\/2\" Nosepiece (with additional 2\" M48 filter thread on the front side)\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003ePlease see this linked\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/baader\/protectiveT-Ring-CanonEOS.pdf\" target=\"_new class=\" pt10link=\"\"\u003ePDF Instruction File\u003c\/a\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efor further information\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"No Filter","offer_id":31695271942,"sku":"BPEOS","price":87.0,"currency_code":"USD","in_stock":true},{"title":"UV-IR Filter","offer_id":31695272006,"sku":"BPEOSL","price":213.0,"currency_code":"USD","in_stock":true},{"title":"H-alpha Filter","offer_id":31695272134,"sku":"BPEOSH","price":290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Baader-protect-nosepiece-1.jpg?v=1477589425"},{"product_id":"baader-cool-ceramic-safety-herschel-prism-for-refractors-bpherp","title":"Baader 2\" Cool Ceramic Safety Herschel Prism Mark ll, Photographic\/Visual System - for Refractors only (BPHERM2P)","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAll sales of solar gear are final, so please choose your filter carefully and reach out with any questions.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eIn 2023, Baader Planetarium introduced the Mark II version of the Baader 2\" Cool-Ceramic Safety Herschel Prism. We are pleased to offer this updated version for outstanding solar viewing and photography.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBaader Planetarium’s 2\" Cool-Ceramic Safety Herschel Prism Mark II affords the finest detail possible in solar viewing. The contrast and sharpness that it provides when observing surface detail will leave you breathless. No solar filter can compare! Additionally, it reveals the sun in a true white-light, uncolored by filters.\u003c\/p\u003e\n\u003cp\u003eWe are offering the photographic\/visual version of the Baader Herschel Prism that offers you the best of both worlds. The integrated rotation mechanism for polarizing filters is an exciting feature offered with the Mark II. It is the best method for brightness adjustment in visual solar observation and solar photography in white light. The Herschel prism polarizes light, making possible the convenience of using a single polarizing filter. You will also want to add the optional 2\" polarizing filter (\u003ca href=\"https:\/\/cloudbreakoptics.com\/products\/polarizing-filter-1?variant=31642831494\"\u003eBPPOL2\u003c\/a\u003e) to the Herschel Prism to provide a stepless brightness-control for your viewing comfort. \u003c\/p\u003e\n\u003cp\u003eThe Mark II version comes complete with a full compliment of 2\" neutral density filters (ND-1.8, ND-0.9, ND-0.6, ND-3.0) and a 2\" 7.5nm Solar Continuum filter. The Solar Continuum filter helps to further boost contrast, revealing sunspot and surface granularity detail. A foam-lined metal carry case is provided for convenience and protection. The Baader Herschel Prism is compatible with Baader's Astro T-2 System. Please follow this link to view a copy of the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.astro-physics.info\/tech_support\/accessories\/baader\/herschel-prism-manual.pdf\" target=\"_blank\"\u003eUser Manual\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eA question that is always asked is, \"Does it damage my telescope to have it looking at the sun for long periods of time?\" No! The lens passes the infrared (heat) part of the spectrum as efficiently as the visible part of the spectrum. Since the lens does not absorb or retain the infrared light, it does not heat up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAUTION - Important Limitation of Use:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt is important to know that a Herschel Prism can\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eonly be used with refracting telescopes\u003c\/span\u003e. It can not be used on any style reflecting telescope. If you own a Petzval-style refractor, or any design which puts elements to the rear of the scope where excessive heat build-up can occur, it is best to check with the manufacturer regarding their specific scope. [Note that Al Nagler of TeleVue has stated that the rear elements of the TeleVue Petzval scopes are sufficiently forward and that no damage will occur to their scopes.]\u003c\/p\u003e\n\u003cp\u003eRegarding visual use, Baader has tested the prism for safety in refractors up to 8\" apertures. They recommend that you add an additional neutral density filter for viewing comfort with the larger scopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAUTION\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Secondary optics, such as field flatteners, telecompressors, Barlows, and filters need to be placed after the Herschel Prism, not in front of it.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Cool-Ceramic Safety Herschel Wedge Prism with 2\" Baader ClickLock Clamp\u003c\/li\u003e\n\u003cli\u003e2\" Neutral density filters (ND-1.8, ND-0.9, ND-0.6, ND-3.0)\u003c\/li\u003e\n\u003cli\u003e2\" 7.5nm Solar Continuum filter\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":31695596678,"sku":"BPHERM2P","price":761.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/baader-safety-coolceramic-herschel-prism-2-photographic--ab2__09257.jpg?v=1686687529"},{"product_id":"2-ir-pass-filter-bpirp2","title":"IR Pass Filter","description":"\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003eThis filter finds application in planetary imaging. It is a favorite of webcam users when imaging planets - especially Mars. The passband begins in the deep red region at 670nm and extends well into the infrared. This long wave light can be used in IR LRGB imaging to produce a sharper luminance image for the best planetary contrast. Often the atmospheric seeing is much steadier at these IR wavelengths. Images taken with IR as luminance channel have produced some of the finest Mars pictures during the last opposition. Contrast on Jupiter and other planets is also visibly enhanced\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eBoth surfaces are optically polished to produce diffraction limited images and professionally coated to very tight tolerances.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e \u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":42536181235961,"sku":"BPIRP125","price":131.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":42536181268729,"sku":"BPIRP2","price":131.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/bpirpboth.jpg?v=1477590068"},{"product_id":"solar-filter-material-from-baader-planetarium","title":"Astrosolar Filter Material","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAll sales of solar gear are final, so please choose your filter carefully and reach out with any questions.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3 class=\"pt12arialbold\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cspan class=\"pt10arial\"\u003e\u003cspan class=\"style7\"\u003e\u003cstrong\u003eIMPORTANT: AstroSolar Safety Film is NOT authorized to be used for naked eye solar observation or production of solar viewers or eclipse glasses.\u003c\/strong\u003e\u003c\/span\u003e For direct solar viewing without a telesope, binocular or camera optics, look for \u003ca href=\"https:\/\/cloudbreakoptics.com\/products\/solar-viewing-glasses\"\u003eeclipse glasses\u003c\/a\u003e with the following certification: ISO 12312-2:2015\u003c\/span\u003e.\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch2 class=\"pt12arialbold\"\u003e\u003cspan\u003eOur Take\u003c\/span\u003e\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cspan\u003eThis loose sheet solar film can be cut to specific sizes to match any of your optical gear. When placed entirely over a front aperture, it transforms your scope into a sun-safe viewing instrument. The film produces a white light image, allowing the view of the surface disk and any sunspots. The two different size options (A4 and 1\/2 square meter) provide the versatility to outfit many different viewing instruments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is a great way to get the gear you are already familiar with ready to safely view the entire Great American Eclipse on August 21st. Cut out the correct size based on the aperture you need, and glue the film in between 2 layers of cardboard, and you're all set.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2 class=\"pt12arialbold\"\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"pt12arialbold\"\u003eWho Should Order AstroSolar® Safety Film??\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eEveryone in the continental U.S., Hawaii, Mexico, Central America, the Caribbean and parts of Alaska, Canada and South America will experience partial phases of the eclipse. If you plan to use a telescope, binoculars or your camera, you must use a proper solar filter on the front of your objective lens to protect your eyes. DO NOT use an eyepiece filter since it is likely to crack under intense heat from the sun, which can cause damage to your eyes. . \u003cbr\u003e\u003cbr\u003eAstroSolar® Safety Film 5.0 Optical Density (OD) is a very cost-effective and very high quality material to make your own solar filter. Be sure to order early for the best pricing and availability so that you can safely enjoy watching the partial phases as the moon covers the sun.\u003c\/p\u003e\n\u003ch2 class=\"pt12arialbold\"\u003eOptical Quality\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003eAstro-Physics is synonymous with optical quality so you know we are very particular about the solar filters that we recommend. AstroSolar® Safety film from Baader Planetarium produces the highest contrast and sharpness possible in your visual or photographic image, thus preserving the performance of your telescope. As you observe the partial phases before and after totality, you will see sunspots and surface granulation in fine detail.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe solar image is a very pleasing natural white without false blue or orange color. Other films and most glass filters produce a blurry bluish or reddish solar image, thereby cutting part of the spectrum. Especially with a falsely-colored orange sun, it is difficult to see faculae regions which are visible predominantly in the blue region of the spectrum.\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eDue to its neutral color balance, AstroSolar enables the use of various color or interference filters, which allow the observer to concentrate on certain spectral passbands for investigations of different layers within the solar \"atmosphere\".\u003c\/p\u003e\n\u003ch2 class=\"pt12arialbold\"\u003eEye Safety\u003c\/h2\u003e\n\u003cp class=\"pt10arial\"\u003eAstroSolar® is essentially free of pinholes. The patented, high-density coatings are deposited on both sides. As a result, the chance of two pinholes overlapping each other is extremely low. Baader AstroSolar® safety film has been approved by the National Bureau of Standards for eye safety in Germany and is CE tested and approved. All processes connected to this product have been thoroughly tested. Coatings are inspected constantly for consistency to ensure your eye safety!\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cstrong\u003e\u003cspan class=\"pt10arialitalic\"\u003eImportant note:\u003c\/span\u003e AstroSolar® 5.0 is NOT designed to work as an \"eclipse shade\" or handheld solar filter and is NOT suitable for naked eye solar observation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eAstroSolar® film was designed to serve as a precision optical window for telescopic and photographic solar observation without deteriorating the optical wavefront. AstroSolar film must be used in front of the optical element of an astronomical telescope, telephoto lens or binocular. For visual observation, you must view through an eyepiece. Do not make a handheld solar filter and hold it directly in front of your eyes.\u003c\/p\u003e\n\u003cp class=\"pt12arialbold\"\u003e\u003cstrong\u003eHistory and Goal of AstroSolar®\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eThe development of AstroSolar® was only possible due to the incredible demand during the 1999 eclipse in Europe. Dozens of miles of film were destroyed during tests to produce the tooling and process techniques necessary to develop an absolutely uniform molecular structure for the substrate. Not to mention the related treatments, annealing and dual side coating that the film undergoes until it has attained the desired properties. The goal was to provide an inexpensive filter material that would preserve the optical quality of telescopes and binoculars throughout Europe. Since that time, observers around the world have used AstroSolar® for daily solar viewing as well as special events like solar eclipses and the Venus Transit in 2012.\u003c\/p\u003e\n\u003cp class=\"pt12arialbold\"\u003e\u003cstrong\u003eOrder Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003e\u003cspan\u003eAstroSolar™ is available in sheet form in two sizes: 200 x 290mm (7.9\" x 11.4\") or 500 x 1000mm (19.7\" x 39.4\") so that you can make your own filters very inexpensively.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBAADER AstroSolar™ Density 5 - Visual\u003c\/span\u003e\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e#\u003cstrong\u003eAS50A4\u003c\/strong\u003e A4 size , 200 x 290mm (7.9\" x 11.4\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e#\u003cstrong\u003eAS50HM\u003c\/strong\u003e 1\/2 meter size, 500 x 1000mm (19.7\" x 39.4\")\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eEach order will come with these instructions: \u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/astrosolar-how-to-build.pdf?v=1785528517\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e\"How To Build Your Own Solar Filter for Telescopes, Binoculars and Cameras\" \u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/astrosolar-filter-for-binoculars.pdf?v=1785528583\" class=\"pt10link\" target=\"_blank\" rel=\"noopener\"\u003e\u003c\/a\u003e\u003cspan\u003e\"Constructing a Solar Filter for Binoculars with Baader AstroSolar® Film\"\u003c\/span\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/astrosolar-technical-safety.pdf?v=1785528644\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e\"Baader Planetarium - Technical and Safety Information\"\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"A4","offer_id":31696257670,"sku":"AS50A4","price":43.0,"currency_code":"USD","in_stock":true},{"title":"A4 5-Pack","offer_id":6549992472603,"sku":"AS50A4-5","price":190.0,"currency_code":"USD","in_stock":true},{"title":"A4 10-Pack","offer_id":6549993652251,"sku":"AS50A4-10","price":370.0,"currency_code":"USD","in_stock":true},{"title":"1\/2 meter","offer_id":31696257734,"sku":"AS50HM","price":99.0,"currency_code":"USD","in_stock":true},{"title":"1\/2 Meter 5-Pack","offer_id":6549996306459,"sku":"AS50HM-5","price":464.0,"currency_code":"USD","in_stock":true},{"title":"1\/2 Meter 10-Pack","offer_id":6549996634139,"sku":"AS50HM-10","price":908.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/baadersolarfilm.jpg?v=1477590837"},{"product_id":"astf-baader-solar-filter-for-telescopes","title":"ASTF - Baader Solar Filter for Telescopes","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAll sales of solar gear are final, so please choose your filter carefully and reach out with any questions.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2\u003e\u003cspan class=\"pt10arial\"\u003eDescription:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003eThe ASTF family of solar filters is constructed in a more elaborate manner than either the ASSF or ASBF and should be considered if you will be observing in extreme temperatures.. AstroSolar® must not be put under stress, neither during mounting the film, nor during any temperature change. For this reason the ASTF Filter features a temperature-compensated cell. The film itself is repeatably cemented onto an injection molded ring, whereas the substrate of that ring has the same thermal expansion as the Astro Solar® Filter material itself. This free floating film-carrier ring is held onto the aluminum frame with the help of another holding ring made of fiber reinforced plastic - for a maximum of security against breaking of the cell. This temperature compensated cell enables the AstroSolar® filter material to retain its excellent optical quality at any temperature - be it -30 degrees C or +50 degrees C. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli class=\"pt10arial\"\u003eSafe for solar observation and photography with all high-end telescopes and extreme tele-lenses\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e\n\u003ca rel=\"noopener noreferrer\" class=\"pt10link\" href=\"https:\/\/cloudbreakoptics.com\/products\/solar-filter-material-from-baader-planetarium\" target=\"_blank\"\u003eAstroSolar® Safety Film\u003c\/a\u003e OD 5.0, mounted stress free in a \u003cstrong\u003etemperature compensated cell\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003eSuitable for highest magnifications and detailed observation of individual sunspots\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e\n\u003cstrong\u003eNo astigmatism\u003c\/strong\u003e during winter observation or with temperature changes in summer\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e\n\u003cstrong\u003eWhat's included:\u003c\/strong\u003e ASTF Filter (with apertures from 80 to 280mm) comes with two sets of centering bolts in 38mm length; 3 bolts with 10mm diameter and 3 bolts with 20mm diameter, adjustable to the unused tube diameter of your telescope or dew cap. In addition, three safety straps with glue-pads and three rubber plugs to cover the unused holes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eUse this \u003ca rel=\"noopener\" href=\"https:\/\/astrosolar.com\/baader-solar-filter\/index.php?lang=en\" target=\"_blank\"\u003eInteractive Solar Filter Finder tool\u003c\/a\u003e to find the right filter size for your telescope!\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/filter-size-chart.pdf?v=1709156288\" rel=\"noopener\" target=\"_blank\"\u003eRecommended Solar Filter Sizes - For Astro-Physics Refractors, Finder and Binoculars\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"pt10arial\"\u003e\n\u003ca class=\"pt10link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/baader-solar-clamping-range.pdf?v=1709156288\" rel=\"noopener\" target=\"_blank\"\u003eClamping Range of Baader Solar Filters (inner\/outer)\u003c\/a\u003e, PDF. Refer to this chart for the clamping range of all filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"pt12arialbold\"\u003eAll Baader Solar Filters Feature:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eOriginal Baader \u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/solar_acc\/solar_acc.htm\"\u003eAstroSolar® Safety Film\u003c\/a\u003e (OD 5.0), cell-mounted and quality-inspected by skilled members of Baader Planetarium staff\u003c\/li\u003e\n\u003cli\u003eClear white IR-rejecting front ring with reinforced raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge\u003c\/li\u003e\n\u003cli\u003eThree (3) injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in three different diameters, depending on the filter category (ASTF\/ASSF\/ASBF). Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube - but to remain firmly mounted\u003c\/li\u003e\n\u003cli\u003eNo tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube. Refer to \u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/solar_acc\/baader-solar-clamping-range.pdf\"\u003eClamping Range of Baader Solar Filters (inner\/outer)\u003c\/a\u003e for further details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index\u003c\/li\u003e\n\u003cli\u003eAdditional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user\u003c\/li\u003e\n\u003cli\u003eIndex scale provided beside each adjustment slot - adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes\u003c\/li\u003e\n\u003cli\u003eBlack, sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame - for blocking sunlight from passing through the filter cell beside the filter area\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eThree (3) security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (ex. gust of wind)\u003c\/li\u003e\n\u003cli\u003eOnly for ASTF-filters: rubber plugs supplied as cover for closing unused adjustment slots in the aluminum frame\u003c\/li\u003e\n\u003cli\u003eWarning text printed onto the front side of each filter cell: Read the Instructions before use\u003c\/li\u003e\n\u003cli\u003eCardboard gift box fit for safely shipping and storing the filter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"80mm (ASTF-80)","offer_id":45917665606,"sku":"ASTF-80","price":75.0,"currency_code":"USD","in_stock":false},{"title":"100mm (ASTF-100)","offer_id":45918337926,"sku":"ASTF-100","price":84.0,"currency_code":"USD","in_stock":true},{"title":"120mm (ASTF-120)","offer_id":45918337990,"sku":"ASTF-120","price":97.0,"currency_code":"USD","in_stock":true},{"title":"140mm (ASTF-140)","offer_id":45918338054,"sku":"ASTF-140","price":113.0,"currency_code":"USD","in_stock":true},{"title":"160mm (ASTF-160)","offer_id":45918338118,"sku":"ASTF-160","price":127.0,"currency_code":"USD","in_stock":true},{"title":"180mm (ASTF-180)","offer_id":45918338182,"sku":"ASTF-180","price":140.0,"currency_code":"USD","in_stock":true},{"title":"200mm (ASTF-200)","offer_id":45918338246,"sku":"ASTF-200","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/baader-astrosolar-filter-features.jpg?v=1499898637"},{"product_id":"assf-baader-solar-filter-for-spotting-scopes-amateur-telescopes-and-camera-lenses","title":"ASSF - Baader Solar Filter for Spotting Scopes, Amateur Telescopes and Camera Lenses","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAll sales of solar gear are final, so please choose your filter carefully and reach out with any questions.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch2\u003e\u003cspan class=\"pt10arial\"\u003eDescription:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe ASSF family of filters offers a stable and rigid solution for all telescopes, spotting scopes and camera lenses. The AstroSolar® filter material is mounted onto a plastic ring. This ring is mounted onto the aluminum front frame.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIf you plan to observe with magnifications above 120x, Baader Planetarium recommends the ASTF filters. The temperature-compensating feature of the ASTF filters will ensure that the filter material expands and contracts with the filter cell as temperatures change to provide optimum image quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSafe solar observation and photography with all spotting scopes, amateur telescopes and camera lenses\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca class=\"pt10link\" href=\"https:\/\/cloudbreakoptics.com\/products\/solar-filter-material-from-baader-planetarium\" target=\"_blank\"\u003eAstroSolar® Safety Film\u003c\/a\u003e OD 5.0, mounted stress free in high-quality cell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat's Included: \u003c\/strong\u003eASSF Filter (apertures 50 – 115 with 3 centering bolts (13mm diameter, 24mm length), ASSF 130 \/ 150 with 3 centering bolts (10mm diameter, 38mm length), 3 Safety Straps with adhesive pads, screws, washers and instruction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eUse this \u003ca href=\"https:\/\/astrosolar.com\/baader-solar-filter\/index.php?lang=en\" rel=\"noopener\" target=\"_blank\"\u003eInteractive Solar Filter Finder tool\u003c\/a\u003e to find the right filter size for your telescope!\u003c\/li\u003e\n\u003cli\u003e\u003ca class=\"pt10link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/filter-size-chart.pdf?v=1709156288\" rel=\"noopener\" target=\"_blank\"\u003eRecommended Solar Filter Sizes - For Astro-Physics Refractors, Finder and Binocular\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/baader-solar-clamping-range.pdf?v=1709156288\" target=\"_blank\"\u003e \u003cspan\u003eClamping Range of Baader Solar Filters (inner\/outer)\u003c\/span\u003e\u003c\/a\u003e, PDF. Refer to this chart for the clamping range of all filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"pt12arialbold\"\u003eAll Baader Solar Filters Feature:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eOriginal Baader \u003ca class=\"pt10link\" href=\"https:\/\/cloudbreakoptics.com\/products\/solar-filter-material-from-baader-planetarium\" target=\"_blank\"\u003eAstroSolar® Safety Film\u003c\/a\u003e (OD 5.0), cell-mounted and quality-inspected by skilled members of Baader Planetarium staff\u003c\/li\u003e\n\u003cli\u003eClear white IR-rejecting front ring with reinforced raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge\u003c\/li\u003e\n\u003cli\u003eThree (3) injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in three different diameters, depending on the filter category (ASTF\/ASSF\/ASBF). Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube - but to remain firmly mounted\u003c\/li\u003e\n\u003cli\u003eNo tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube. Refer to \u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/solar_acc\/baader-solar-clamping-range.pdf\"\u003eClamping Range of Baader Solar Filters (inner\/outer)\u003c\/a\u003e for further details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index\u003c\/li\u003e\n\u003cli\u003eAdditional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user\u003c\/li\u003e\n\u003cli\u003eIndex scale provided beside each adjustment slot - adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes\u003c\/li\u003e\n\u003cli\u003eBlack, sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame - for blocking sunlight from passing through the filter cell beside the filter area\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003eThree (3) security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (ex. gust of wind)\u003c\/li\u003e\n\u003cli\u003eOnly for ASTF-filters: rubber plugs supplied as cover for closing unused adjustment slots in the aluminum frame\u003c\/li\u003e\n\u003cli\u003eWarning text printed onto the front side of each filter cell: Read the Instructions before use\u003c\/li\u003e\n\u003cli\u003eCardboard gift box fit for safely shipping and storing the filter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"80mm (ASSF-80)","offer_id":45918515142,"sku":"ASSF-80","price":55.0,"currency_code":"USD","in_stock":false},{"title":"100mm (ASSF-100)","offer_id":45921146374,"sku":"ASSF-100","price":69.0,"currency_code":"USD","in_stock":false},{"title":"115mm (ASSF-115)","offer_id":45921146438,"sku":"ASSF-115","price":72.0,"currency_code":"USD","in_stock":false},{"title":"130mm (ASSF-130)","offer_id":45921146502,"sku":"ASSF-130","price":79.0,"currency_code":"USD","in_stock":true},{"title":"150mm (ASSF-150)","offer_id":45921146566,"sku":"ASSF-150","price":93.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/baader-astrosolar-filter-features_988453e9-5a13-4f84-9744-9e0d2bd3514c.jpg?v=1499900732"},{"product_id":"heavy-dutyt-2-quick-changer-bp6a","title":"Heavy-DutyT-2 Quick Changer (BP6A)","description":"\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBaader Planetarium Heavy Duty T-2 Quick Changer (Bayonet)\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":6605366755355,"sku":"BP6A","price":91.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/BP6A.jpg?v=1522433400"},{"product_id":"case-for-mark-v-bino-viewers-bpmarkvs-case","title":"Case for Mark V Bino-Viewers (BPMARKVS-CASE)","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis is the stand aloe carrying case for the Baader Mark V Bino-Viewers. This item is for the case ONLY and DOES NOT include the bino-viewers.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Bino-Viewer Case","offer_id":8233279455321,"sku":"BPMARKVS-CASE","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/products\/Baader-Bino-in-Case_8bfde9ff-a1ed-4728-8aa5-5b0648f7dd8e.jpg?v=1524690012"},{"product_id":"used-1-25-green-filter","title":"USED 1.25\" Green Filter","description":"\u003ch2\u003eUSED GEAR INFORMATION\u003c\/h2\u003e\n\u003cp\u003eThis filter is in great condition. Comes in original packaging.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eNot just another colored filter!\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eFinally, a set of serious tools for the planetary observer. Baader Planetarium's Premium Colored Filters bring a new level of quality and performance to planetary contrast enhancement.\u003c\/p\u003e\n\u003cp\u003eFreedom from Ghost images, even when stacked. Striae-free substrates are polished parallel to 30 seconds of to avoid wedge errors. Finest 7-layer hard multicoatings on both faces feature 0.25% residual reflections (Baader filters are unique, no other colored filter incorporates anti-reflection multicoatings). The coatings are also different for each of the filters, in order to match the coating performance to the filter curve of each color. This maximizes the transmission and minimizes reflections.\u003c\/p\u003e\n\u003cp\u003eExtremely High Transmissions result in maximum contrast and isolation of planetary details, even with smaller telescopes. Efficiencies of the three longpass filters (Red, Orange, and Yellow) peaks at 98%, and efficiencies of the three bandpass filters (Green, Blue, Dark Blue) achieve 70%.\u003c\/p\u003e\n\u003cp\u003eCarefully designed spectral characteristics. Filters may be stacked without image degradation or ghosting, in order to provide even narrower passbands. Or, combine with any of the other Baader filters for interesting possibilities. For actual spectral traces, see Color Filter Transmission Curves.\u003c\/p\u003e\n\u003cp\u003eNo reduction in sharpness, even at high magnifications or when using the filter far ahead of the focal plane (ie, digital imaging, or in front of a diagonal or binoviewer).\u003c\/p\u003e\n\u003cp\u003eOnly one filter is needed for binoviewing. Only Baader colored filters have the optical quality necessary for use this far ahead of the focal plane.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":43833331876089,"sku":"2458304-USED","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/IMG_5348.jpg?v=1683843303"},{"product_id":"used-10-x-60-vario-finder-1060vq","title":"USED - 10 x 60 Vario Finder (1060VQ)","description":"\u003ch2\u003eUSED GEAR INFORMATION\u003c\/h2\u003e\n\u003cp\u003eThis finder scope is in great condition, however this is only the optical tube (as seen in the pictures). This does not come with any addons such as eyepieces.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe 10 x 60 Vario Finder is a fine replacement for our former 8 x 50 Straight-through Finder (discontinued). This new finder is produced by Baader Planetarium and introduces many new features and functionalities.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality coated 61mm f\/4 objective (250 mm focal length)\u003c\/li\u003e\n\u003cli\u003eCoarse focusing is provided by the sliding draw tube (35 mm travel), and fine focusing is performed using the threaded objective cell with lens-locking ring (12 mm travel).\u003c\/li\u003e\n\u003cli\u003e1 ¼\" brass clamp ring with 3 thumb screws for interchangeable eyepieces and accessories\u003c\/li\u003e\n\u003cli\u003e45° erecting prism with 1 ¼\" nosepiece and T-2 thread\u003c\/li\u003e\n\u003cli\u003e25mm eyepiece with variable brightness illuminated measuring reticle\u003c\/li\u003e\n\u003cli\u003eRetractable dew shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe Vario Finder system is unique in that it utilizes a high quality 2-element Zeiss designed objective and an interchangeable T-2 accessory system that will allow the included 45° prism to be switched with user-provided 90° prisms, or used in a straight-through configuration. Because of the exceptional quality of the optics, this finder will also be able to be used as a guide scope employing a variety of new 3rd party guide cameras.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"pt10arial\"\u003eThis finder assembly includes a newly designed Astro-Physics custom bracket for mounting in our Quick Release Base (\u003c\/span\u003e\u003cspan class=\"pt10link\"\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#qrbased\" class=\"pt10link\"\u003eQRBASED\u003c\/a\u003e\u003c\/span\u003e\u003cspan class=\"pt10arial\"\u003e). The bracket slides into the dovetail base and then tightens quickly with two thumbscrews. This provides a secure and repeatable method of attachment. It may also be attached to either of our sliding bars (\u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#9\" class=\"pt10link\"\u003e7\" SB0800\u003c\/a\u003e\u003cspan\u003e and \u003c\/span\u003e\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/mounting_plates\/mounting_plates.htm#10\" class=\"pt10link\"\u003e10\" SB1000\u003c\/a\u003e\u003cspan class=\"pt10arial\"\u003e). A tripod adapter is also included with the finder.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"pt10arial\"\u003eThe bracket assembly includes the bracket ring, alignment screws, and male dovetail base. The nylon alignment screws provide a quick and easy way to align your finder without marring its finish. \u003c\/span\u003e\u003cspan class=\"pt10arialbold\"\u003eNote: A\u003ca href=\"http:\/\/www.astro-physics.com\/products\/accessories\/visual_acc\/visual_acc.htm#qrbased\" class=\"pt10link\"\u003eQuick Release Base (QRBASED)\u003c\/a\u003e, purchased separately, is required for attachment.\u003c\/span\u003e \u003cspan class=\"pt10arial\"\u003eThe illuminator uses one CR2032 coin battery (included).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pt10arial\"\u003eWeight: 2 lb. 1 oz. (0.935 kg)\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":43893614674169,"sku":"USED-1060VQ","price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/20230628_125453.jpg?v=1687982176"},{"product_id":"uhc-l-ultra-l-booster-filter","title":"UHC-L \/ Ultra-L-Booster Filter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Baader UHC-L filter is the classic all-round \"light pollution rejection filter\". This UHC-L filter is the successor of the well-proven Baader UHC-S filter. \u003c\/p\u003e\n\u003cp\u003eThe application of the UHC-L happens mainly in visual and photographic observation of emission nebulae (star forming regions, planetary nebulae, supernova remnants) under medium to highly polluted skies.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVisual and photographic UHC-L Nebula filter with highest transmission.\u003c\/li\u003e\n\u003cli\u003eUltra High Contrast L Filter blocks city lights and increases contrast of nebula and comets (C2 lines).\u003c\/li\u003e\n\u003cli\u003eCan be used as LED-optimized Luminance filter for RGB-Imaging with skyglow suppression.\u003c\/li\u003e\n\u003cli\u003eBlue transmission optimized to block blueish skyglow caused by LED car- and streetlights.\u003c\/li\u003e\n\u003cli\u003eCreates a much brighter image than a conventional Nebula filter.\u003c\/li\u003e\n\u003cli\u003eIdeal for deep-sky observers. This UHC-L filter is the perfect visual complement to narrowband OIII filters.\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ hard coated and plane-optically polished – with sealed coating edges (Life-Coat™).\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a telescope-sided black outer rim.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\"","offer_id":44468740129017,"sku":"BPUHCL125","price":105.0,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":44468740161785,"sku":"BPUHCL2","price":181.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/UHC-L_filter-sized__57046.jpg?v=1709241025"},{"product_id":"used-baader-6-5nm-f-2-highspeed-filters-cmos-optimized-h-alpha-o-iii","title":"USED Baader 6.5nm f\/2 Highspeed Filters – CMOS-optimized (H-alpha, O-III)","description":"\u003ch2\u003eUSED Baader f\/2 Highspeed filters\u003c\/h2\u003e\n\u003cp\u003eThese filters are in great condition! Both are 36mm unmounted.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBaader H-alpha \/ O-III \/ S-II f \/ 2 Highspeed Filter Set - Precision Grade\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e6.5 nm FWHM, recommended for extremely fast optical systems from f \/ 3.4 to f \/ 1.8\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpecially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eReflex-Blocker ™ hard coated and planoptically polished - with sealed coating edges ( \u003c\/span\u003e\u003cspan\u003eLife-Coat ™\u003c\/span\u003e\u003cspan\u003e )\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptimized for modern CMOS cameras, but excellent for CCD camera technologies\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe new generation of Baader CMOS-optimized filters features:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCMOS-Optimized Baader Filter\u003c\/li\u003e\n\u003cli\u003eIncreased contrast\u003c\/li\u003e\n\u003cli\u003eEver more narrow passbands\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker™ coatings, for largest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/li\u003e\n\u003cli\u003eFWHM on each filter category carefully designed to allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s\/n ratio\u003c\/li\u003e\n\u003cli\u003eIdentical filter thickness to existing standards, with utmost care for parfocality\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/li\u003e\n\u003cli\u003eEach filter coated individually, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed read more)\u003c\/li\u003e\n\u003cli\u003eLife-Coat™: evermore hard coatings to enable a non-aging coating for life – even in a most adverse environment\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"O-III","offer_id":45591478108409,"sku":"USED-2961227","price":129.0,"currency_code":"USD","in_stock":true},{"title":"H-alpha","offer_id":45591478141177,"sku":"USED-2961152","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/IMG_8046.jpg?v=1728586055"},{"product_id":"used-baader-flipmirror-ii","title":"USED Baader FlipMirror II","description":"\u003cp\u003eThis used FlipMirror II is in good condition.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBaader-FlipMirror II Star Diagonal (BFM II) with precise surface-mirrored flip mirror with multi-layer Al coating and three ports:\n\u003cul style=\"margin-bottom: 0px;\"\u003e\n\u003cli\u003eStraight-through (S52, M48 and T-2 on both sides) for full-frame camera, spectrograph, or other instruments\u003c\/li\u003e\n\u003cli\u003eAdjustable T-2 thread on top for eyepiece clamps, video modules (up to 32 mm image circle) or even a binoviewer\u003c\/li\u003e\n\u003cli\u003eBottom flange for the optional Off-Axis-Guider or for an optional calibration lamp for spectroscopy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eShortest possible overall length for any application – compatible with a large number of adapters from the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/accessories\/adapters-imaging-accessories\/astro-t2-system.html\"\u003eBaader Astro T-2 system\u003c\/a\u003e, the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/catalogsearch\/result\/?q=m48\"\u003eM48 system\u003c\/a\u003e and the \u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/filters\/universal-filter-changer\/baader-ufc-(universal-filter-changer).html\"\u003eUFC \u003c\/a\u003e\u003ca href=\"https:\/\/www.baader-planetarium.com\/en\/filters\/universal-filter-changer\/baader-ufc-(universal-filter-changer).html\"\u003esystem (Universal Filter Changer)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eRotatable M48 connection rings made of hardened, stainless steel on front and rear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":45603631005945,"sku":"BFM-II-USED","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/IMG_8140.jpg?v=1729115807"},{"product_id":"used-moon-skyglow-filter-1-26","title":"USED - Moon \u0026 Skyglow Filter 1.25\"","description":"\u003ch2\u003eUSED GEAR INFORMATION\u003c\/h2\u003e\n\u003cp\u003eThis filter appears to be in good condition. There are no markings on the glass or the housing.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis filter was designed to transmit the maximum amount of incoming light, while suppressing skyglow due to artificial lighting and background glow when the Moon is up. The filter material is a special Neodymium glass that effectively filters out selective wavelengths of low-pressure sodium and other manmade sources. Although it is not a nebula filter, it enhances the views of deep-sky galaxies and nebulae by increasing the contrast of these objects against the background sky. While nebula filters transmit only a few select wavelengths corresponding to various atomic lines, this filter transmits a large portion of the continuous spectrum, while blocking a few select lines of the more common manmade light.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis filter can also be used for lunar\/planetary viewing. It increases planetary contrast and works especially well on Jupiter and Mars to help bring out subtle detail. Try it with the yellow filter of the Baader Premium 1.25\" Colored Filter Set to bring out the surface features of Mars.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"pt10arial\"\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eNeodymium\u003c\/span\u003e - unique, selective, blocking feature of the Neodymium element greatly reduces glare without reducing important color and brightness variations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFine-polished, plane-parallel glass\u003c\/span\u003e - eliminates any double images or ghosting due to wedge errors in the glass. As a result, it can be used in front of CCD cameras or high-power eyepieces without introducing optical defects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eMulti-layer coatings on both surfaces\u003c\/span\u003e - ultrahard and durable ion-beam hardened coatings, may be cleaned anytime without fear. Note: the 2\" filter has a very hard, single layer MgF2 coating (Zeiss T coating). (See the \u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/cleaningproducts\/cleaningsystem.htm\"\u003eAstro-Physics Optical Cleaning System (OPTCS)\u003c\/a\u003e with its detailed \u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/cleaningproducts\/optcs-instructions.pdf\"\u003einstructions\u003c\/a\u003e.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eVery high light transmission\u003c\/span\u003e - while blocking unwanted skyglow and many street light emissions. Transmission within the selected wave bands exceeds 95%.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eFilter cell design\u003c\/span\u003e - large, clear aperture with no vignetting. The unique milled notches at the edge of the filter make it easy to grasp and turn, especially appreciated in the dark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"pt10arialbold\"\u003eCombine filters \u003c\/span\u003e- standard 1.25\" or 48 mm (2\") eyepiece filter threads. It can be threaded onto other filters to allow stacking for narrower passbands. We recommend adding the yellow filter from the Baader Premium 1.25\" or 2\" Colored Filter Set to boost the contrast on Mars. When stacking filters on eyepieces, be careful that the eyepiece barrel, with the filters attached, does not strike the mirror or prism of your diagonal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pt10arial\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/bpmsgraph.pdf\"\u003eTransmission Curve\u003c\/a\u003e\u003cspan\u003e - PDF document \u003c\/span\u003e\u003cbr\u003e\u003ca class=\"pt10link\" href=\"http:\/\/astro-physics.com\/products\/accessories\/baader\/filters\/skyglow_graph\/bpms_filtercurve.gif\"\u003eExtended Transmission Curve\u003c\/a\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":47104877134073,"sku":"USED-BPMSGF125-2","price":56.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/20251212_100820.jpg?v=1765563344"},{"product_id":"used-1-25-oiii-visual-filter-1","title":"USED - 1.25\" OIII Visual Filter","description":"\u003ch2\u003eUSED GEAR INFORMATION\u003c\/h2\u003e\n\u003cp\u003eThis filter is in good condition. 10nm FWHM.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":47108672880889,"sku":null,"price":70.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/20251212_100727.jpg?v=1765563398"},{"product_id":"asbf-baader-solar-filter-for-binoculars","title":"ASBF - Baader Solar Filter for Binoculars, fits 85-100mm OD","description":"\u003cblockquote\u003e\n\u003cp\u003e\u003cspan\u003eThe current solar maximum cycle will continue to peak throughout 2024 and beyond offering sunspots that will change and morph from one day to the next. Many people viewed the sun for the first time during the April 8\u003csup\u003eth\u003c\/sup\u003e eclipse and were wowed by the level of activity. We encourage you to continue popping your scope out during the day to observe or photograph the progression of sunspots across the surface of our dynamic sun.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis filter version is similar to the ASSF in terms of mechanics. The only difference is that one side is cut off in order to make them usable on any binocular - even when the bridge is nearly closed. (depending on the binocular type). BAADER AstroSolar® filter material is mounted onto a plastic ring. The plastic ring itself works as stabilizing element for the filter cell. This ring is mounted onto the aluminum front frame. The thermal expansion coefficients of the plastic and the film are similar. \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSafe solar observation with all types of binoculars \/ safe solar photography with all camera lenses\u003c\/li\u003e\n\u003cli\u003eAstroSolar® Safety Film OD 5.0, mounted stress free in high-quality cell\u003c\/li\u003e\n\u003cli\u003eOne side of filter cell shortened for use with binoculars. \u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwo filters are mandatory for binoculars, price is for one piece only\u003c\/li\u003e\n\u003cli\u003eClear white IR-rejecting front ring with reinforced raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge\u003c\/li\u003e\n\u003cli\u003eThree (3) injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any binocular or telescope tube - but to remain firmly mounted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eNo tool needed for mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.astro-physics.info\/tech_support\/accessories\/solar_acc\/baader-solar-clamping-range.pdf\" target=\"_blank\"\u003eRefer to Clamping Range of BAADER Solar Filters (inner\/outer) for further details.\u003cbr\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index.\u003c\/li\u003e\n\u003cli\u003eAdditional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndex scale provided beside each adjustment slot - adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes.\u003c\/li\u003e\n\u003cli\u003eBlack, sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame - for blocking sunlight from passing through the filter cell beside the filter area.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThree (3) security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the binocular under any circumstances (ex. gust of wind).\u003c\/li\u003e\n\u003cli\u003eWarning text printed onto the front side of each filter cell: Read the Instructions before use.\u003c\/li\u003e\n\u003cli\u003eCardboard gift box fit for safely shipping and storing the filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's included:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eASBF Filter with 3 centering bolts (13mm diameter, 24mm length)\u003c\/li\u003e\n\u003cli\u003e3 Safety Straps with adhesive pads\u003c\/li\u003e\n\u003cli\u003eScrews and washers\u003c\/li\u003e\n\u003cli\u003eInstruction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuick Reference for Astro-Physics Refractors, Binoculars and Finders.\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVario-Finder: ASBF-60\u003c\/li\u003e\n\u003cli\u003eStowaway (all models): ASBF-100. The flat side of this filter is especially useful if your Stowaway is mounted on top of another instrument.\u003c\/li\u003e\n\u003cli\u003eAP 10.5x70, 11x70, 15x70 \u0026amp; 16x70 Binoculars  (sold in previous years, no longer available): ASBF-70\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want to find a filter for a binocular, finder or camera not listed above,\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.astro-physics.info\/tech_support\/accessories\/solar_acc\/baader-solar-clamping-range.pdf\" target=\"_blank\"\u003echeck this chart.\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Baader Planetarium","offers":[{"title":"80mm (ASBF-80)","offer_id":47164482289913,"sku":"ASBF-80","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/asbf-astrosolar-binocular-filter-od-50-50mm-100mm-03f__14074.jpg?v=1767388834"},{"product_id":"used-baader-2-cool-ceramic-safety-herschel-prism-photographic-visual-system-for-refractors-only-bpherp","title":"USED - Baader 2\" Cool Ceramic Safety Herschel Prism, Photographic\/Visual System - for Refractors only (BPHERP)","description":"\u003cblockquote\u003e\u003c\/blockquote\u003e\n\u003ch2\u003eUSED GEAR INFORMATION\u003c\/h2\u003e\n\u003cp\u003eThis wedge appears to be very lightly used and is in great condition.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eBaader Planetarium’s 2\" Cool-Ceramic Safety Herschel Prism affords the finest detail possible in solar viewing. The contrast and sharpness that it provides when observing surface detail will leave you breathless. No solar filter can compare! Additionally, it reveals the sun in a true white-light, uncolored by filters.\u003c\/p\u003e\n\u003cp\u003eWe are offering the photographic\/visual version of the Baader Herschel Prism that offers you the best of both worlds. It is the best method for brightness adjustment in visual solar observation and solar photography in white light. The Herschel prism polarizes light, making possible the convenience of using a single polarizing filter. You will also want to add the optional 2\" polarizing filter (\u003ca href=\"https:\/\/cloudbreakoptics.com\/products\/polarizing-filter-1?variant=31642831494\"\u003eBPPOL2\u003c\/a\u003e) to the Herschel Prism to provide a stepless brightness-control for your viewing comfort. \u003c\/p\u003e\n\u003cp\u003eThis wedge comes complete with a full compliment of 2\" neutral density filters (ND-1.8, ND-0.9, ND-0.6, ND-3.0) and a 2\" 7.5nm Solar Continuum filter. The Solar Continuum filter helps to further boost contrast, revealing sunspot and surface granularity detail. A foam-lined metal carry case is provided for convenience and protection. The Baader Herschel Prism is compatible with Baader's Astro T-2 System. Please follow this link to view a copy of the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.astro-physics.info\/tech_support\/accessories\/baader\/herschel-prism-manual.pdf\" target=\"_blank\"\u003eUser Manual\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eA question that is always asked is, \"Does it damage my telescope to have it looking at the sun for long periods of time?\" No! The lens passes the infrared (heat) part of the spectrum as efficiently as the visible part of the spectrum. Since the lens does not absorb or retain the infrared light, it does not heat up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAUTION - Important Limitation of Use:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt is important to know that a Herschel Prism can\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eonly be used with refracting telescopes\u003c\/span\u003e. It can not be used on any style reflecting telescope. If you own a Petzval-style refractor, or any design which puts elements to the rear of the scope where excessive heat build-up can occur, it is best to check with the manufacturer regarding their specific scope. [Note that Al Nagler of TeleVue has stated that the rear elements of the TeleVue Petzval scopes are sufficiently forward and that no damage will occur to their scopes.]\u003c\/p\u003e\n\u003cp\u003eRegarding visual use, Baader has tested the prism for safety in refractors up to 8\" apertures. They recommend that you add an additional neutral density filter for viewing comfort with the larger scopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAUTION\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- Secondary optics, such as field flatteners, telecompressors, Barlows, and filters need to be placed after the Herschel Prism, not in front of it.\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader Cool-Ceramic Safety Herschel Wedge Prism with 2\" Baader ClickLock Clamp\u003c\/li\u003e\n\u003cli\u003e2\" Neutral density filters (ND-1.8, ND-0.9, ND-0.6, ND-3.0)\u003c\/li\u003e\n\u003cli\u003e2\" 7.5nm Solar Continuum filter\u003c\/li\u003e\n\u003cli\u003eCarrying Case\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":48814603567353,"sku":"USED-BPHERP","price":570.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/20260813_125950.jpg?v=1786651969"},{"product_id":"used-oiii-4nm-narrowband-filter-36mm-unmounted","title":"USED - Oiii 4nm Narrowband filter 36mm unmounted","description":"\u003ch2\u003e\u003cspan dir=\"auto\"\u003eUSED GEAR INFORMATION\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan dir=\"auto\"\u003eThis filter is in excellent condition. It does not appear to have any defects. They have been inspected, cleaned, and repackaged.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan dir=\"auto\"\u003eThis new generation of Baader CMOS filters features:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"rightImage\"\u003e\n\u003ca class=\"image-popup\" title=\"New CMOS optimized Baader filters\" href=\"https:\/\/www.baader-planetarium.com\/blogs\/wp-content\/uploads\/2021\/05\/cmos-filter-example-1-scaled.jpg\"\u003e\u003cimg class=\"wp-image-38708 size-medium\" src=\"https:\/\/www.baader-planetarium.com\/blogs\/wp-content\/uploads\/2021\/05\/cmos-filter-example-1-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\"\u003e\u003c\/a\u003e\n\u003cdiv class=\"imageCaption\"\u003e\u003cspan dir=\"auto\"\u003eCMOS-optimized Baader Filters\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eIncreased contrast\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eEver narrower passbands\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eReflex-Blocker\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003csup\u003e\u003cspan dir=\"auto\"\u003e™\u003c\/span\u003e\u003c\/sup\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003ecoatings\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003e, for greatest ever freedom from halos, even under most adverse conditions concerning aux-optics\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eFWHM on each filter category carefully designed\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003eto allow for 1:1:1 exposures, matched for typical CMOS quantum efficiency and s\/n ratio\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eIdentical filter thickness\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003eto existing standards, with utmost care for parfocality\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eBlackened edges all around\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003e, with filter-lead-side-indicator in the form of a black frontside outer rim, to additionally eliminate any reflection due to light falling onto the edge of a filter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eEach filter coated individually\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003e, with sealed coating edge (NOT cut out of a larger plate with coatings left exposed\u003c\/span\u003e\u003cspan dir=\"auto\"\u003e)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan dir=\"auto\"\u003eLife-Coat™\u003c\/span\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003e:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan dir=\"auto\"\u003e\u003cspan\u003e \u003c\/span\u003eevermore hard coatings to enable a non-aging coating for life – even in the most adverse environment\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 class=\"productFullDetail-productSpecificationsProductName-2g0 text-base font-bold mb-4 lg_text-lg\"\u003e\u003cspan dir=\"auto\"\u003eBaader O-III 36mm ultra-narrowband filter (4nm) – CMOS-optimized\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"read-more-root-URo\"\u003e\n\u003cdiv class=\"read-more-containerOpened-yJY read-more-container-sMW read-more-containerDefault-GDH overflow-hidden relative\"\u003e\n\u003cdiv class=\"undefined global-readmore-innercontainer\"\u003e\n\u003cdiv class=\"customAttributes-root-MXb\"\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"customAttributes-groupTitle-h1c text-base font-bold mt-8 mb-2 uppercase\"\u003e\u003cspan dir=\"auto\"\u003eProduct Details\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"customAttributes-list-qDg rounded\"\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eSKU\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-content-Z8V inline-block\"\u003e\u003cspan dir=\"auto\"\u003e2961402\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eEAN Code\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e4047825047779\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eManufacturer\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-content-RoB inline-block\"\u003e\u003cspan dir=\"auto\"\u003eBaader Planetarium\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eNet weight (kg)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e0.00\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"customAttributes-groupTitle-h1c text-base font-bold mt-8 mb-2 uppercase\"\u003e\u003cspan dir=\"auto\"\u003eOptical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"customAttributes-list-qDg rounded\"\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"multiselect-label-g4u font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eAR coating\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-contentHtml-C27 inline\"\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eReflex-Blocker™ hard coated\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eplane-optically polished\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eCWL (Central Wavelength)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e500.7 nm\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eHBW (Halfbandwidth)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e4 nm\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eSuitable for f\/ratio\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-contentHtml-Izm inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e\u0026gt; f\/3.4\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eTransmission Range\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003eO-III\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"multiselect-label-g4u font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eType of Filter\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-contentHtml-C27 inline\"\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eUltra-Narrowband\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"customAttributes-groupTitle-h1c text-base font-bold mt-8 mb-2 uppercase\"\u003e\u003cspan dir=\"auto\"\u003eMechanical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"customAttributes-list-qDg rounded\"\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eFilter mounted\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-contentHtml-Izm inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003eUnmounted\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eFilter shape\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-contentHtml-Izm inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003eround\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eFilter size\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-contentHtml-Izm inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e36 mm\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"textarea-label-XIL font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eFilter Thickness (without cell)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"textarea-contentHtml-szu block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003e2 mm\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"customAttributes-groupTitle-h1c text-base font-bold mt-8 mb-2 uppercase\"\u003e\u003cspan dir=\"auto\"\u003eUsage \u0026amp; Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul class=\"customAttributes-list-qDg rounded\"\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"multiselect-label-g4u font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eFilter Usage\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-contentHtml-C27 inline\"\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eCMOS\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eCCD\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"multiselect-option-2f0 inline-block break-words\"\u003e\u003cspan dir=\"auto\"\u003eO-III\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"select-label-3lv font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eSingle or Set\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"select-contentHtml-Izm inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cspan dir=\"auto\"\u003eSingle Filter\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"customAttributes-listItem-3fg border-solid border-b flex items-start min-h-[3rem]\"\u003e\n\u003cdiv class=\"text-label-o47 font-bold inline-block mr-2\"\u003e\u003cspan dir=\"auto\"\u003eSpecial Features\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"text-contentHtml-R-g inline-block\"\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\n\u003cspan dir=\"auto\"\u003eCMOS optimized with\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan dir=\"auto\"\u003eLife-Coat™\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"richContent-root-Ddk\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":48814770979065,"sku":"USED-BPOiii4nm36mm","price":311.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/6486\/files\/20260813_155042.jpg?v=1786661660"}],"url":"https:\/\/cloudbreakoptics.com\/collections\/manufacturer-by-baader-planetarium.oembed?page=2","provider":"Cloud Break Optics","version":"1.0","type":"link"}