{"product_id":"hr-variable-coma-corrector-2-inch-hrcc02-01","title":"HR Variable Coma Corrector (2-inch) Without Camera Adapters","description":"\u003cp\u003eThe HR Variable Coma Corrector, designed by Harrie Rutten for Explore Scientific, \u003cstrong\u003ecorrects the coma at the edge of the field in Newtonian reflectors\u003c\/strong\u003e, including fast ones down to f\/3. This version is the corrector itself, which arrives assembled for visual use. The \u003ca href=\"\/products\/hr-variable-coma-corrector-2-inch-hrcc02-00\"\u003eHR Variable Coma Corrector (2-inch) With T2 Adapters\u003c\/a\u003e adds the two camera adapters for imaging.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5 id=\"key-features\"\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-lens design\u003c\/strong\u003e correcting a 30mm field, for Newtonians as fast as f\/3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolychromatic Strehl of 0.98 at f\/4 and 0.96 at f\/3\u003c\/strong\u003e (visual), per Explore Scientific.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMC-coated optics\u003c\/strong\u003e to reduce internal reflections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelical focuser with a laser-etched scale\u003c\/strong\u003e in 1mm divisions, so each eyepiece's best position can be found once and set again later.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2-inch barrel.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"ideal-for\"\u003eIdeal For\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual observers with fast Newtonians\u003c\/strong\u003e, where stars toward the edge of the field stretch into small comets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlmost any Newtonian with a parabolic primary mirror\u003c\/strong\u003e, which Explore Scientific names as the corrector's range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch5 id=\"accessories-compatibility\"\u003eAccessories \u0026amp; Compatibility\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera adapters are not included.\u003c\/strong\u003e For imaging, the \u003ca href=\"\/products\/hr-variable-coma-corrector-2-inch-hrcc02-00\"\u003eversion with T2 adapters\u003c\/a\u003e comes with the T2 (M42x0.75) and M48x0.75 adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA 2mm Allen key\u003c\/strong\u003e, not supplied, releases the small locking screw on the helical focuser.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":67651477569710,"sku":"HRCC02-01","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/2494\/1742\/files\/HRCC02-00_1_57f89e7a-03ee-46e8-b2ee-7841ed531341.jpg?v=1791494523","url":"https:\/\/astrotelescopium.com\/products\/hr-variable-coma-corrector-2-inch-hrcc02-01","provider":"AstroTelescopium","version":"1.0","type":"link"}