{"product_id":"antlia-kit-filtri-lrgb-50mm","title":"Antlia LRGB Filter Kit 50mm","description":"\u003ch2\u003eAntlia LRGB Filter Kit 50mm – Complete Set for Color Deep-Sky Astrophotography\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAntlia LRGB Filter Kit 50mm\u003c\/strong\u003e is a \u003cstrong\u003ecomplete set of four filters\u003c\/strong\u003e – Luminance (L), Red (R), Green (G) and Blue (B) – in unmounted 50mm format, designed for deep-sky astrophotography with large-format \u003cstrong\u003emonochrome\u003c\/strong\u003e CCD and CMOS cameras. Each filter is made on a monolithic, non-glued optical glass substrate with double-sided multi-layer nano-coating and hand-blackened edges to eliminate stray light.\u003c\/p\u003e\n\u003cp\u003eThe kit's spectral separation is optimized for a near \u003cstrong\u003e1:1:1\u003c\/strong\u003e RGB ratio – with a difference within 10% – allowing balanced exposures across the three channels without complex post-processing compensation. OIII emissions overlap the green and blue filters for natural colors and high rendering on nebulae. The gap between green and red blocks the main sodium light-pollution line at 589nm, improving color separation.\u003c\/p\u003e\n\u003cp\u003eCompatible with large-format \u003cstrong\u003eKAF\/KAI\u003c\/strong\u003e, \u003cstrong\u003eSony IMX\u003c\/strong\u003e and \u003cstrong\u003eG-Sense\u003c\/strong\u003e sensors, with transmission above \u003cstrong\u003e95%\u003c\/strong\u003e and focal ratios down to \u003cstrong\u003ef\/2.0\u003c\/strong\u003e. The increased 3mm thickness ensures flatness over larger surfaces, ideal for large-format filter wheels.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTransmission \u003cstrong\u003e\u0026gt;95%\u003c\/strong\u003e guaranteed on all four channels\u003c\/li\u003e\n\u003cli\u003eRGB balance \u003cstrong\u003e1:1:1\u003c\/strong\u003e (difference \u0026lt;10%) for equivalent exposures\u003c\/li\u003e\n\u003cli\u003eSodium blocking at 589nm between G and R channels for optimal color separation\u003c\/li\u003e\n\u003cli\u003eMonolithic, non-glued substrate, increased 3mm thickness\u003c\/li\u003e\n\u003cli\u003eHand-blackened edges – stray light and halos minimized\u003c\/li\u003e\n\u003cli\u003eCompatible with fast telescopes down to \u003cstrong\u003ef\/2.0\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eContents\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e4 filters: L + R + G + B\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFormat\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e50mm (unmounted)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003ePassband transmission\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e\u0026gt;95%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eOut-of-band blocking\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eOD3 @ 300–1050nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eSubstrate\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eMonolithic optical glass, 3mm ±0.05mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eSurface quality\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e60\/40 (MIL-O-13830)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFlatness\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1\/4λ\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eParallelism\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e30\"\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eMulti-layer nano-coating, double-sided\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eRGB balance\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003e1:1:1 (±10%)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eDown to f\/2.0\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eRecommended use\u003c\/strong\u003e\u003c\/td\u003e\u003ctd\u003eMono CCD\/CMOS, nebulae, galaxies, large-format deep sky\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":58535499202891,"sku":"ANA-LRGB-50","price":749.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/antlia-filtri-lrgb-36mm-kit-contrasto-elevato-riprese-deep-sky-camere-monocromatiche_32b9a6fe-e218-4ae9-b343-b189bb8c436f.jpg?v=1789892362","url":"https:\/\/adriasky.it\/en\/products\/antlia-lrgb-filter-kit-50mm-en","provider":"Adriasky","version":"1.0","type":"link"}