{"product_id":"antares-focal-reducer-2-0-7x-multicoated-4204","title":"Antares 0.7X Focal Reducer - 2\" - FR2-0.7","description":"\u003ch3 style=\"text-align: center;\"\u003eAntares Focal Reducer - 2\" - 0.7x - Multicoated\u003c\/h3\u003e\n\u003ch3 style=\"text-align: center;\"\u003eProduct Highlights:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAntares Focal Reducer - 2\"\u003c\/li\u003e\n\u003cli\u003e0.7x Reduction (approx.)\u003c\/li\u003e\n\u003cli\u003e43 mm Aperture\u003c\/li\u003e\n\u003cli\u003e4 Element Achromat\u003c\/li\u003e\n\u003cli\u003eFits standard 2\" barrel filter threads\u003c\/li\u003e\n\u003cli\u003eDesigned For f\/10 or higher f\/ratios\u003c\/li\u003e\n\u003cli\u003eFully Multicoated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Antares FR2-0.7X is the same 4-element f\/6.3 lens system used for f\/10 Schmidt-Cassegrain telescopes but in a 2\" barrel threaded for standard filters. It is recommended for increasing true field in telescope with f\/ratios of f\/10 or higher. Focal length reduction is around 0.7X, but the exact reduction factor depends on the lens positioning between the objective and image plane. (Not a true field corrector lens.)\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAntares Model No:\u003c\/td\u003e\n\u003ctd\u003eFR2-0.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptics Type:\u003c\/td\u003e\n\u003ctd\u003eFocal Reducer Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture:\u003c\/td\u003e\n\u003ctd\u003e43 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length:\u003c\/td\u003e\n\u003ctd\u003e-NA-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design:\u003c\/td\u003e\n\u003ctd\u003e4-Elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFL Reduction:\u003c\/td\u003e\n\u003ctd\u003e0.63x to 0.7x (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":31976290713713,"sku":"ANT-4204","price":60.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/focal-reducer-2-07x.jpg?v=1776458963","url":"https:\/\/khanscope.com\/en-fr\/products\/antares-focal-reducer-2-0-7x-multicoated-4204","provider":"Khan Scope Centre","version":"1.0","type":"link"}