{"product_id":"baader-set-filtri-ultra-highspeed-f3-3-5-4nm-sho","title":"Baader f\/3 Ultra-Highspeed Filter Set 3.5\/4nm (H-alpha\/O-III\/S-II)","description":"\u003cp\u003e\u003cstrong\u003eThe Baader f\/3 Ultra-Highspeed Filter Set 3.5\/4nm (H-alpha \/ O-III \/ S-II)\u003c\/strong\u003e is the version of the CMOS-Optimized range designed for fast astrographs (though not as extreme as f\/2 systems) from f\/3.4 to f\/2.3, with an ultra-narrow passband for maximum available contrast.\u003c\/p\u003e\n\n\u003ch2\u003eUltra-narrow passband for fast optics\u003c\/h2\u003e\n\u003cp\u003eThe set includes an \u003cstrong\u003eH-alpha\u003c\/strong\u003e filter, an \u003cstrong\u003eO-III\u003c\/strong\u003e filter and an \u003cstrong\u003eS-II\u003c\/strong\u003e filter, with a 3.5\/4nm FWHM passband, optimised for optical systems from f\/3.4 to f\/2.3. This configuration offers the maximum possible contrast for high-contrast imaging of emission nebulae, revealing the finest details even under heavy light pollution.\u003c\/p\u003e\n\n\u003ch2\u003eBaader CMOS-Optimized technology\u003c\/h2\u003e\n\u003cp\u003eEach filter is coated with \u003cstrong\u003eReflex-Blocker™\u003c\/strong\u003e treatment, which eliminates unwanted reflections even in the presence of auxiliary optics, and with \u003cstrong\u003eLife-Coat™\u003c\/strong\u003e technology: a hardened coating that does not flake, does not degrade and lasts the filter's entire lifetime even under the most extreme conditions. The edges are blackened all around, with a visual indicator on the front side for correct orientation during mounting.\u003c\/p\u003e\n\n\u003ch2\u003eAvailable formats\u003c\/h2\u003e\n\u003cp\u003eAvailable in 7 formats: 1¼\" (31.8mm), 2\" (50.8mm), 31mm, 36mm, 50.4mm, 50×50mm and 65×65mm.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilters included\u003c\/td\u003e\n\u003ctd\u003eH-alpha, O-III, S-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth (FWHM)\u003c\/td\u003e\n\u003ctd\u003e3.5 \/ 4 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended optical systems\u003c\/td\u003e\n\u003ctd\u003ef\/3.4 to f\/2.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter thickness\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eReflex-Blocker™, Life-Coat™\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBaader Planetarium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eIdeal for astrophotographers using fast astrographs with a focal ratio between f\/2.3 and f\/3.4 who want the maximum available contrast for imaging emission nebulae, planetary nebulae and supernova remnants in \"Hubble Palette\" style (SHO), even under light-polluted skies.\u003c\/p\u003e","brand":"Baader-Planetarium","offers":[{"title":"1¼\" (31,8mm)","offer_id":57946657816907,"sku":"BRBP2961640","price":776.0,"currency_code":"EUR","in_stock":true},{"title":"2\" (50,8mm)","offer_id":58173992501579,"sku":"BRBP2961643","price":1127.0,"currency_code":"EUR","in_stock":true},{"title":"31mm","offer_id":58173992534347,"sku":"BRBP2961641","price":826.0,"currency_code":"EUR","in_stock":true},{"title":"36mm","offer_id":58173992567115,"sku":"BRBP2961642","price":992.0,"currency_code":"EUR","in_stock":true},{"title":"50,4mm","offer_id":58173992599883,"sku":"BRBP2961644","price":1218.0,"currency_code":"EUR","in_stock":true},{"title":"50x50mm","offer_id":58173992632651,"sku":"BRBP2961645","price":1299.0,"currency_code":"EUR","in_stock":true},{"title":"65x65mm","offer_id":58173992665419,"sku":"BRBP2961646","price":1687.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/baader-set-filtri-ultra-highspeed-f3-35-4nm-114pollice.jpg?v=1787075157","url":"https:\/\/adriasky.it\/en\/products\/baader-f3-ultra-highspeed-filter-set-3-5-4nm-sho","provider":"Adriasky","version":"1.0","type":"link"}