{"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\/products\/used-oiii-4nm-narrowband-filter-36mm-unmounted","provider":"Cloud Break Optics","version":"1.0","type":"link"}