{"product_id":"sky-watcher-esprit-100edx-flattener","title":"Sky-Watcher Esprit 100EDX Flattener","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eField Flattener Matched to the Esprit 100EDX\u003c\/li\u003e\n\u003cli\u003e44mm Corrected Image Circle\u003c\/li\u003e\n\u003cli\u003ePoint-Like Stars Across Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eDesigned for the Esprit 100EDX 550mm f\/5.5 Triplet\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 Esprit 100EDX Flattener\u003c\/h2\u003e\n\u003cp\u003eThe Sky-Watcher Esprit 100EDX Flattener is the optically matched field flattener for the Esprit 100EDX Super APO Triplet. It corrects the telescope's natural field curvature and delivers a flat field across a 44mm image circle, so stars stay point-like across the entire sensor, including full-frame cameras.\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\u003e44mm Flat Field for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eA refractor's focal plane is naturally curved, which stretches stars toward the edges of a large sensor. This flattener corrects that curvature across a 44mm image circle, wider than the diagonal of a full-frame sensor, so stars remain round and sharp from the center to the corners.\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\u003eMatched to the 100mm f\/5.5 Esprit 100EDX\u003c\/h3\u003e\n\u003cp\u003eThe Esprit 100EDX is a 100mm, 550mm focal length f\/5.5 triplet with one Ohara FPL-53 ED element. Pairing it with its dedicated flattener turns this fast triplet into a complete wide-field astrograph for large nebulae, star fields and galaxy groups.\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 flattener fit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSky-Watcher lists it for the Esprit 100EDX only. For the Esprit 70EDX or the Evostar 100EDX, use the Esprit 70EDX \/ Evostar 100EDX Flattener (S20216).\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\u003eYes. The 44mm image circle is larger than the roughly 43mm diagonal of a full-frame sensor, and it covers APS-C and smaller sensors with room to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes it fit the older Esprit 100ED (non-EDX)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSky-Watcher lists this flattener for the Esprit 100EDX only. Contact us if you own an earlier Esprit 100ED and we will help you find the correct corrector.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat back focus does the flattener need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSky-Watcher had not published the back focus specification for this flattener at launch. Contact us before ordering and we will confirm the correct sensor spacing for your camera.\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\u003e810098970761\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\u003eField Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd\u003eEsprit 100EDX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Focal Length\u003c\/td\u003e\n\u003ctd\u003e550mm (f\/5.5)\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\"\u003eEsprit 100EDX Flattener\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":67666300993821,"sku":"SW-S20217","price":330.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/100_2.jpg?v=1790967089","url":"https:\/\/davidastro.com\/products\/sky-watcher-esprit-100edx-flattener","provider":"David Astro","version":"1.0","type":"link"}