{"product_id":"sky-watcher-skymax-200dx-0-7x-reducer","title":"Sky-Watcher Skymax 200DX 0.7x Reducer","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e0.7x Reducer Matched to the Skymax 200DX\u003c\/li\u003e\n\u003cli\u003eConverts 2000mm f\/10 to 1400mm f\/7\u003c\/li\u003e\n\u003cli\u003e43mm Image Circle for APS-C and Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003e55mm Back Focus\u003c\/li\u003e\n\u003cli\u003eM48 Camera-Side Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSky-Watcher Skymax 200DX 0.7x Reducer\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Skymax 200DX 0.7x Reducer is the matched imaging corrector for the Skymax 200DX Maksutov-Cassegrain. It reduces the telescope's focal length from 2000mm to 1400mm and its focal ratio from f\/10 to f\/7, widening the field of view and shortening exposure times while delivering a 43mm image circle with 55mm of back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAbout Half the Exposure Time at f\/7\u003c\/h3\u003e\n\u003cp\u003eGoing from f\/10 to f\/7 roughly doubles the light reaching each pixel, so you need about half the exposure time for the same signal. The field of view also grows by a factor of about 1.43 in each direction, which frames larger galaxies and nebulae that do not fit at the native 2000mm focal length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e43mm Image Circle with Standard M48 Spacing\u003c\/h3\u003e\n\u003cp\u003eThe reducer delivers a fully illuminated, corrected image circle 43mm in diameter, suitable for camera sensors up to APS-C and full-frame. Its standard M48 thread and 55mm back focus work with common M48 adapter rings and spacers, so setting the correct distance to your sensor is straightforward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich telescope does this reducer fit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 0.7x reducer is designed specifically for the Sky-Watcher Skymax 200DX.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat back focus does the Skymax 200DX 0.7x Reducer need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is designed for 55mm of back focus and has a standard M48 thread for use with M48 adapter rings. Add the spacers or adapter rings your camera requires to reach that distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill it cover a full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer produces a 43mm corrected image circle, which is rated for sensors up to APS-C and full-frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat focal length and focal ratio do I get with the reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the reducer installed, the Skymax 200DX works at 1400mm and f\/7, compared with 2000mm and f\/10 natively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e810098971010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eOptical Specifications\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eReducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduction\u003c\/td\u003e\n\u003ctd\u003e0.7x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd\u003eSkymax 200DX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Length\u003c\/td\u003e\n\u003ctd\u003e1400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReduced Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e43mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eMechanical Specifications\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-Side Thread\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSkymax 200DX 0.7x Reducer\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":67666299420957,"sku":"SW-S20224","price":590.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/S20224_SkyMax200DX_Correctorwcaps.jpg?v=1790967047","url":"https:\/\/davidastro.com\/products\/sky-watcher-skymax-200dx-0-7x-reducer","provider":"David Astro","version":"1.0","type":"link"}