SVX80T-3SV Operators Manual: Click here for the online manual SVX80T-3SV
Premier Stellarvue Optics! It is well known that the Stellarvue 80 mm triplet is one of the highest rated 80 mm telescopes on the market. With that being said, we have taken the optical accuracy even higher in this new SVX series! These are the telescopes to buy if you wish to view the universe both visually and photographically. SVX series Apochromatic Telescopes use objectives that have the highest optical ratings as measured and documented on our Zygo Phase-Shifting Laser Interferometer. SVX series optics are rated at .98 - .996 Strehl with excellent optical correction for aberrations commonly seen in mass produced optics. To attain this level of optical accuracy it is necessary for us to go beyond machine polishing. Special tools are made and experienced opticians hand figure objectives here in our optical shop in Auburn California. While our former models (without the X designation) were all excellent coming in at .95 Strehl or higher, SVX series telescopes are even more exceptional, placing 98 - 99% of the light precisely where it should be. Stellarvue Premier (X) Series refractors are for the astronomer who recognizes the best when they see it. Each SVX series refractor comes with a Zygo interferometric test report taken in our shop, documenting the accuracy of your objective!
The SVX80 is the wide field imaging system to buy if you want the best performance both visually and photographically. This system comes with an extremely high Strehl (highly accurate) triplet objective for the ultimate visual experience. Also included is a matched SFF4 field flattener that threads onto the 3" Stellarvue focuser for imaging. This system uses an over-sized 3" focuser that eliminates the vignetting seen when using full sized ccd and DSLR Sensors and a 2.5" focuser. This focuser is robust, smooth and stable.
Also included are Stellarvue's new risers and a Losmandy-sized mounting rail. The risers are necessary to position the telescope and camera in a balanced configuration. The visual/photographic system is specifically designed for imaging and has American made hardware with rings that bolt directly to the tube completely eliminating any felt flexure. The heavy duty 3" focuser is also hard mounted to the tube with a highly accurate rotator. This maintains alignment better than many rotating focusers on the market. The SVX80T-3SV comes in a heavy duty, thickly padded C18 case that holds the telescope, riser blocks and rings as one unit. Merely take it from the case and slide it onto your mount.
Each lens focuses light precisely and in addition the extreme broadband coatings on each surface enhance it even further. Using it visually, the stars appear vivid and the background, velvet black. Since these coatings transmit more than 99% in the visual spectrum and far above and below it, reflections seen on CCD images are eliminated. The relatively fast speed and high Strehl optics make the 80 apo an excellent wide field imaging telescope while the visual performance is simply stunning.
Tube and dew shield: It comes with an aluminum tube and dew shield that is finished in Instrument White powder coating. The dew shield is fixed and the dust cover threads into place.
Internal tube treatment: The inside of the main tube assembly is painted "ultra flat black" and the focuser is baffled to eliminate any tube wall reflections.
The SFF4 field flattener threads onto the draw tube. Simply un-thread the 2" visual back and thread the SFF4 in its place. The flattener is included and optimized to work with DSLR cameras that have an over-sized 48 mm t-ring. This is a modular flattener that can be used with various optional adapters allowing it to be used with CCD and CMOS cameras that may have a different back-focus. If your camera has a different back focus, call us. We can advise you on what you need to use this flattener with your camera. In most cases, we can also modify this flattener so it will work with your particular camera without the need for you to purchase expensive custom adapters.
The combination of the 3" draw tube on this telescope and the large flattener results in a field with practically zero vignetting when compared against other 80 mm telescopes. This is the reason we provide the flattener with the SVX80ST-3SV. It gives the best performance when using cameras with sensors of all sizes up to full frame!
Please Note: We no longer offer a reducer-flattener for this system. This is the sharpest visual 80 mm f-6 refractor and when used with the included SFF4 photographic field flattener it is an outstanding, full frame 480 mm f-6 astrograph.
For visual use we highly recommend the Stellarvue Optimus eyepieces and 2" quartz mirror star diagonal. This will provide you with the widest, sharpest field of view and maintain the extremely high contrast this apo lens delivers.