{"title":"Image correctors for telescopes and astrophotography","description":"\u003cp\u003eBrowse our Image correctors for telescopes and astrophotography collection. Hot Sale.\u003c\/p\u003e","products":[{"product_id":"explore-scientific-field-flattener-f5-to-f7-es-ff2f5f7","title":"Explore Scientific Field Flattener f\/5 to f\/7 (ES-FF2F5\/F7)","description":"\u003ch1 class=\"product-title\"\u003eExplore Scientific Field Flattener f\/5 to f\/7\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a field flattener for refractor-type telescopes with a focal ratio of f\/5 to f\/7\u003c\/li\u003e\n\u003cli\u003eCauses no change to the telescope focal length\u003c\/li\u003e\n\u003cli\u003e2-inch barrel to easily attach to a two-inch focuser\u003c\/li\u003e\n\u003cli\u003eFully multi-coated optics\u003c\/li\u003e\n\u003cli\u003eT-ring thread on the device so a T-ring can be used to easily attach a DSLR camera or a dedicated astrocamera\u003c\/li\u003e\n\u003cli\u003e38 mm of clear aperture\u003c\/li\u003e\n\u003cli\u003eRequires 55mm (+\/-2) of back focus\/spacing between the device and the camera sensor\u003c\/li\u003e\n\u003cli\u003ePremium high glossy anodizing finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen doing astrophotography with refractor-type telescopes, the faster the focal ratio the more field curvature becomes a problem. Field curvature will appear in the corners of astrophotographs, making the stars smear perpendicular to the axis of the image. This is called coma -- coma is Latin for comet, because the stars look like comets. The more the curvature, the closer to the center the coma appears. The larger the sensor, the worse the coma.\u003c\/p\u003e\n\u003cp\u003eAstrophotographers can easily correct the coma by using a field flattener – an optical device that goes between the telescope and the camera. Field fatteners are not interchangeable, because these devices are designed to work with a small range of focal ratios.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific field flattener is designed to work with telescopes with focal ratios between f\/5 and f\/7. Our device requires 55 mm (+\/-2 mm) of spacing between the back of the device and the camera sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNOTE: This device is for photographic use only. It is NOT intended for visual use.\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eExplore Scientific Field Flattener f\/5 to f\/7\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":49092777934948,"sku":"vgu1787937992319","price":99.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/9705\/7380\/files\/explore-scientific-field-flattener-f5-to-f7-es-ff2f5f7_1.webp?v=1787937997"},{"product_id":"explore-scientific-hr-variable-coma-corrector-2-inch-hrcc02-00","title":"Explore Scientific HR Variable Coma Corrector (2-inch) (HRCC02-00)","description":"\u003ch1\u003eExplore Scientific HR Variable Coma Corrector (2-inch)\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAfter hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like brilliant precise points of light. But as you survey the image, you notice the stars at the edge have taken on an unnatural comet-like shape. Your long night has been marred by coma. Coma is a common plague of the Newtonian reflector design, and its annoying presence at the outskirts of an image can be a bane for astronomers of all levels.\u003c\/p\u003e\n\u003cp\u003eExplore Scientific’s HR Variable Coma Corrector is a high-performance optical corrector designed by world famous optical designer Harrie Rutten, and it will help you minimize or even eliminate image aberrations caused by this off-axis optical phenomenon even in fast Newtonians. This 2-inch coma corrector with is EMC Coated to reduce internal reflections and its spacer with markings allow you to use the device on almost any Newtonian telescope with a parabolic primary mirror, even fast Newtonians such as the\u003cspan\u003e \u003c\/span\u003eBRESSER N20839 f\/3.9 Photo Newtonian. Tightly secured by three thumbscrews, this accessory comes with two adapters (M42x0.75 and M48x0.75) to secure to your T adapter and a protective cap.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eHRCC02–00\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e1lb; .45kg\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eDiameter\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e69.3mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eHeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e147.2mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\u003cspan class=\"speccell\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003ch3 class=\"spanrow\"\u003e\u003cspan class=\"speccell\"\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific HR Variable Coma Corrector\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"speccell\"\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":49092777967716,"sku":"hmk1787937992848","price":192.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/9705\/7380\/files\/explore-scientific-hr-variable-coma-corrector-2-inch-hrcc02-00_1.webp?v=1787937998"}],"url":"https:\/\/www.morningmerchant.shop\/collections\/image-correctors-for-telescopes-and-astrophotograp.oembed","provider":"My Store","version":"1.0","type":"link"}