{"product_id":"baader-h-alpha-2-f-2-highspeed-filter-6-5nm-cmos-optimized","title":"Baader 6.5nm f\/2 Highspeed Filters- CMOS-optimized","description":"\u003ch1\u003eBaader 6.5nm f\/2 Highspeed Filters- CMOS-optimized\u003c\/h1\u003e\n\u003cdiv class=\"station-tabs-content is-active\"\u003e\n\u003cdiv class=\"station-tabs-content-inner\"\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eNow with 47.4 mm unmounted for use with FCCT\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBaader H-alpha \/ O-III \/ S-II f \/ 2 Highspeed Filter Set- Precision Grade\u003c\/li\u003e\n\u003cli\u003e6.5 nm FWHM, recommended for extremely fast optical systems from f \/ 3.4 to f \/ 1.8\u003c\/li\u003e\n\u003cli\u003eSpecially designed for the special filter requirements when used with fast optics like the Celestron RASA astrographs\u003c\/li\u003e\n\u003cli\u003eReflex-Blocker TM hard coated and planoptically polished- with sealed coating edges ( Life-Coat TM )\u003c\/li\u003e\n\u003cli\u003eBlackened edges all around, with filter-lead-side-indicator in the form of a black frontside outer rim\u003c\/li\u003e\n\u003cli\u003eOptimized for modern CMOS cameras, but excellent for CCD camera technologies\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-BlockerTM 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\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"data-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMANUFACTURER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSUITABLE FOR F\/RATIO\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003ef\/3.4 and faster\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTRANSMISSION RANGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eH-alpha \/ O-III \/ S-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER THICKNESS (WITHOUT CELL)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003cp\u003e2 mm Thickness = 1.25\"\/ 2\" \/ 31mm \/ 36mm\u003c\/p\u003e\n\u003cp\u003e3mm Thickness = 50.4mm \/ 50x50 \/ 65x65\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eHBW (HALFBANDWIDTH)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6.5 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eCWL (CENTRAL WAVELENGTH)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003e656,3 nm \/ 500,7 nm \/ 671,7 nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eAR-COATING\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eReflex-BlockerTM hard coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSPECIAL FEATURES\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eCMOS-optimized with\u003cspan\u003e \u003c\/span\u003eLife-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SIZE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eMultiple\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER USAGE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eCMOS, CCD, H-alpha, O-III, S-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER MOUNTED\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eMounted (LPFC 6mm) \/ Unmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTYPE OF FILTER\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\u003cspan\u003ef\/2 Highspeed\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSINGLE OR SET?\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eSingles and Filter-Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eFILTER SHAPE\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eround \/ square (depending on size)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eBaader 6.5nm f\/2 Highspeed Filters- CMOS-optimized (H-alpha, O-III, S-11)\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/astronomyplus.com\/pages\/baader-warranty\" rel=\"noopener\" target=\"_blank\"\u003eBaader Lifetime Warranty\u003c\/a\u003e\u003cbr\u003e\u003ca rel=\"noopener\" title=\"FAQ\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/faq_problems_with_filters_can_have_the_strangest_causes.pdf?v=1749932737\" target=\"_blank\"\u003eProblems with filters can have the strangest causes\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"H-alpha \/ 1.25\"","offer_id":67615227085029,"sku":"BAA-FCHALHS-1 (Baader #2961150)","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"H-alpha \/ 2\"","offer_id":67615227117797,"sku":"BAA-FCHALHS-2 (Baader #2961153)","price":383.0,"currency_code":"CAD","in_stock":true},{"title":"H-alpha \/ 31 mm","offer_id":67615264047333,"sku":"BAA-FCHALHS-RD31 (Baader #2961151)","price":244.0,"currency_code":"CAD","in_stock":true},{"title":"H-alpha \/ 36 mm","offer_id":67615264080101,"sku":"BAA-FCHALHS-RD36 (Baader #2961152)","price":274.0,"currency_code":"CAD","in_stock":true},{"title":"H-alpha 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#2961226)","price":247.0,"currency_code":"CAD","in_stock":true},{"title":"O-III \/ 36 mm","offer_id":67615264342245,"sku":"BAA-FCOIIIHS-RD36 (Baader #2961227)","price":271.0,"currency_code":"CAD","in_stock":true},{"title":"O-III \/ 47.4 mm","offer_id":67615264375013,"sku":"BAA-FCOIIIHS-2U (Baader #2961228U)","price":332.0,"currency_code":"CAD","in_stock":true},{"title":"O-III \/ 50.4 mm","offer_id":67615264407781,"sku":"BAA-FCOIIIHS-RD50 (Baader #2961229)","price":395.0,"currency_code":"CAD","in_stock":true},{"title":"O-III \/ 50 x 50 mm","offer_id":67615264440549,"sku":"BAA-FCOIIIHS-SQ50 (Baader #2961230)","price":452.0,"currency_code":"CAD","in_stock":true},{"title":"O-III \/ 65 x 65 mm","offer_id":67615264473317,"sku":"BAA-FCOIIIHS-SQ65 (Baader #2961231)","price":565.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 1.25\"","offer_id":67615264506085,"sku":"BAA-FCSIIHS-1 (Baader #2961300)","price":231.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 2\"","offer_id":67615264538853,"sku":"BAA-FCSIIHS-2 (Baader #2961300)","price":379.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 31 mm","offer_id":67615264571621,"sku":"BAA-FCSIIHS-RD31 (Baader #2961301)","price":248.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 36 mm","offer_id":67615264604389,"sku":"BAA-FCSIIHS-RD36 (Baader #2961302)","price":273.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 47.4 mm","offer_id":67615264637157,"sku":"BAA-FCSIIHS-2U (Baader #2961303U)","price":331.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 50.4 mm","offer_id":67615264669925,"sku":"BAA-FCSIIHS-RD50 (Baader #2961304)","price":396.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 50 x 50 mm","offer_id":67615264702693,"sku":"BAA-FCSIIHS-SQ50 (Baader #2961305)","price":453.0,"currency_code":"CAD","in_stock":true},{"title":"S-II \/ 65 x 65 mm","offer_id":67615264735461,"sku":"BAA-FCSIIHS-SQ65 (Baader #2961306)","price":567.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 1.25\"","offer_id":67615264768229,"sku":"BAA-FCSETHS-1 (Baader #2961660)","price":656.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 2\"","offer_id":67615264800997,"sku":"BAA-FCSETHS-2 (Baader #2961663)","price":1079.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 31 mm","offer_id":67615264833765,"sku":"BAA-FCSETHS-RD31 (Baader # 2961661)","price":696.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 36 mm","offer_id":67615264866533,"sku":"BAA-FCSETHS-RD36 (Baader #2961662)","price":775.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 50.4 mm","offer_id":67615264932069,"sku":"BAA-FCSETHS-RD50 (Baader #2961664)","price":1127.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset \/ 50 x 50 mm","offer_id":67615264964837,"sku":"BAA-FCSETHS-SQ50 (Baader #2961665)","price":1298.0,"currency_code":"CAD","in_stock":true},{"title":"Filterset 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