{"product_id":"baader-filtro-contrast-booster","title":"Baader Contrast Booster Filter","description":"\u003ch2\u003eBaader Contrast Booster Filter – Contrast and Sharpness Without False Colour\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBaader Contrast Booster\u003c\/strong\u003e is an advanced optical filter made of \u003cstrong\u003eneodymium-doped glass\u003c\/strong\u003e, designed to \u003cstrong\u003eeliminate chromatic aberration\u003c\/strong\u003e in achromatic refractors and dramatically improve image contrast and sharpness. With \u003cstrong\u003eover 95% transmission\u003c\/strong\u003e, it delivers brighter images than classic green Moon filters, with more natural colour rendering.\u003c\/p\u003e\n\u003cp\u003eIt completely eliminates the false colours typical of budget achromatic refractors, removes blue chromatic aberration, enhances detail on Jupiter and Mars (including the Great Red Spot), and darkens atmospheric skyglow for a darker sky background. No loss of quality even beyond 200x magnification.\u003c\/p\u003e\n\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary observation\u003c\/strong\u003e: eliminates blue cast and reveals fine detail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar observation\u003c\/strong\u003e (only with a Baader AstroSolar filter): sharper, more natural image\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrestrial observation\u003c\/strong\u003e: more neutral, higher-contrast image\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDemanding beginners\u003c\/strong\u003e: a better alternative to the green Moon filters supplied with telescopes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable formats\u003c\/h3\u003e\n\u003cp\u003eAvailable in 2 formats: 1¼\" (31.8mm) and 2\" (50.8mm).\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnti-chromatic Contrast Booster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNeodymium-doped glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;95% in the passband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear coating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7-layer multicoating, 0.25% reflectivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront coating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23-layer dielectric long-pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface treatment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIon-assisted hardening on both faces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMoon, planets, Sun (with AstroSolar filter), terrestrial observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBaader Planetarium (Germany)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e For solar observation, use the Contrast Booster exclusively in combination with the Baader AstroSolar OD 5.0 safety filter.\u003c\/p\u003e","brand":"Baader-Planetarium","offers":[{"title":"1¼\" (31,8mm)","offer_id":51261920772427,"sku":"BRBP2458360","price":89.0,"currency_code":"EUR","in_stock":true},{"title":"2\" (50,8mm)","offer_id":58166859792715,"sku":"BRBP2458365","price":143.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/baader-filtro-contrast-booster-2-pollici-telescopi-acromatici-osservazione-astronomica.jpg?v=1744219806","url":"https:\/\/adriasky.it\/en\/products\/baader-contrast-booster-filter-1","provider":"Adriasky","version":"1.0","type":"link"}