{"product_id":"0-5x-focal-reducer-2-fr2","title":"Antares 0.5X Focal Reducer - 2\" - FR2-0.5","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Antares 0.5x Focal Reducer - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe story used to be that focal reducers are built for Schmidt-Cassegrain telescopes only. SCTs are supposedly the best all-around telescopes for astrophotography and imaging. Wrong! The new surge of high-end refractors built for easy astrophotography means that there is a need for new designs of photographic adaptors. And the The \u003cb\u003eAntares 2-inch 0.5x Focal Reducer\u003c\/b\u003e is one such adaptor!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eAntares 2-inch 0.5x Focal Reducer\u003c\/b\u003e threads into the nosepiece of 2-inch camera adaptors commonly used for Digital SLR cameras. The same threads found on 2-inch eyepieces for coloured filters are used in this new item as well.\u003c\/p\u003e\n\u003cp\u003eDecrease your telescope effective focal length by 50 percent to conceal tracking errors! Halve the f-stop of your telescope for shorter exposures! Also, the \u003cb\u003eAntares 2-inch 0.5x Focal Reducer\u003c\/b\u003e will work with 2-inch eyepieces for visual use! A careful test of the 0.5x with a Meade 26mm QX eyepiece, 2-inch Diagonal and Sky-Watcher 102mm f\/10 achromat produced a fully-illuminated field of view.\u003c\/p\u003e\n\u003cp\u003e*Be careful with the The \u003cb\u003eAntares 2-inch 0.5x Focal Reducer\u003c\/b\u003e when using the combination with Newtonian Reflectors or short-focus refractors, as backfocus may be lacking. On reflecting telescopes, make sure to use the focal reducer only with eyepiece focal lengths shorter than seven times the new effective focal ratio of your telescope. \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares 0.5x Focal Reducer - 2\" Features... \u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cul\u003e\n\u003cli\u003eHalve the f-stop of your telescope for shorter exposures\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eDecrease your telescope effective focal length by 50 percent to conceal tracking errors\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWill work with 2-inch eyepieces for visual use\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eThreads into the nosepiece of 2-inch camera adaptors commonly used for Digital SLR cameras\n\u003cp\u003e  \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCrafted for use with all telescope designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAntares 0.5x Focal Reducer - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eEquipment Type: Focal Reducer\u003c\/p\u003e\n\u003cp\u003eCompression: 0.5x\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eThreaded: Yes\u003c\/p\u003e\n\u003cp\u003e# of Elements: 2\u003c\/p\u003e\n\u003cp\u003eConstruction: Black anodized aluminum cell\u003c\/p\u003e\n\u003cp\u003eApplication: *All telescope designs\u003c\/p\u003e\n\u003cp\u003eCoatings: Fully Multi-coated\u003c\/p\u003e\nAntares Optical Product Number: FR2","brand":"Antares","offers":[{"title":"Default Title","offer_id":10554646657,"sku":"ANT-4202","price":31.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/focal-reducer2-05x_e242abd0-c15b-4f4b-ad66-cd6cd98a1984.jpg?v=1776459280","url":"https:\/\/khanscope.com\/en-fr\/products\/0-5x-focal-reducer-2-fr2","provider":"Khan Scope Centre","version":"1.0","type":"link"}