{"product_id":"baader-set-filtri-ultra-highspeed-f3-3-5-4nm-1-25-sho","title":"Baader Ultra-Highspeed f\/3 Filter Set 3.5\/4nm 1.25\" (H-alpha\/O-III\/S-II)","description":"\u003cp\u003e\u003cstrong\u003eThe Baader Ultra-Highspeed f\/3 Filter Set 3.5\/4nm 1.25\" (H-alpha \/ O-III \/ S-II)\u003c\/strong\u003e is the variant of the CMOS-Optimized range for fast astrographs (though not as extreme as f\/2 systems) from f\/3.4 to f\/2.3, with ultra-narrow bandwidth for the maximum available contrast.\u003c\/p\u003e\n\n\u003ch2\u003eUltra-narrow bandwidth 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 bandwidth, optimized 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 strong 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 peel, degrade, and lasts the entire life of the filter even in 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\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eFilters included\u003c\/td\u003e\u003ctd\u003eH-alpha, O-III, S-II\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eBandwidth (FWHM)\u003c\/td\u003e\u003ctd\u003e3.5 \/ 4 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFormat\u003c\/td\u003e\u003ctd\u003e1.25\" (31.8mm), M28.5 thread\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRecommended optical systems\u003c\/td\u003e\u003ctd\u003ef\/3.4 to f\/2.3\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter thickness\u003c\/td\u003e\u003ctd\u003e2 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCoating\u003c\/td\u003e\u003ctd\u003eReflex-Blocker™, Life-Coat™\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eBrand\u003c\/td\u003e\u003ctd\u003eBaader Planetarium\u003c\/td\u003e\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 contrast available for imaging emission nebulae, planetary nebulae, and supernova remnants in the \"Hubble Palette\" style (SHO), even under light-polluted skies.\u003c\/p\u003e","brand":"Baader-Planetarium","offers":[{"title":"Default Title","offer_id":57946657816907,"sku":"BRBP2961640","price":776.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/Baader-Filters-H-alpha-OIII-SII-CMOS-Ultra-Highspeed-1-25.jpg?v=1785073440","url":"https:\/\/adriasky.it\/en\/products\/baader-ultra-highspeed-f3-filter-set-3-5-4nm-1-25-sho","provider":"Adriasky","version":"1.0","type":"link"}