{"product_id":"celestron-edgehd-1100-ota-cge","title":"Celestron EdgeHD 11\" Optical Tube Assembly CGE Dovetail","description":"\n\u003ch2\u003e\u003cstrong\u003eCelestron EdgeHD 11\" Optical Tube Assembly (CGE Dovetail)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eSee the Universe in True HD\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCelestron EdgeHD 11\" OTA\u003c\/strong\u003e delivers astrograph-quality performance with a flat, coma-free field right to the edge of today’s largest imaging sensors. Whether you’re imaging galaxies, nebulae, planets or observing visually, the EdgeHD system ensures pinpoint stars, superb contrast, and outstanding sharpness across the frame.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eTrue Astrograph Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMany “astrograph” designs flatten only part of the field or leave curvature visible on flat camera sensors. EdgeHD optics are engineered to deliver:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThree-times flatter focal plane\u003c\/strong\u003e than standard SCT designs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTight, round star shapes across large-format chips\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBeautiful, contrast-rich visual views with wide eyepieces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePerfect for DSLR, mirrorless and dedicated astronomy cameras.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eOptimised for Imaging \u0026amp; Visual Use\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eImproved Optical \u0026amp; Mechanical Control\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eStarBright XLT coatings\u003c\/strong\u003e maximise light throughput, while precision mechanics ensure stable performance night after night.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey design enhancements:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMirror clutches\u003c\/strong\u003e reduce image shift during long exposures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRear cooling vents\u003c\/strong\u003e with dust filters to equalise temperature faster\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFastar-compatible secondary\u003c\/strong\u003e allows ultra-fast \u003cstrong\u003ef\/2\u003c\/strong\u003e imaging with third-party accessories\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt native \u003cstrong\u003ef\/10\u003c\/strong\u003e, you retain superb image scale. Add an optional reducer for \u003cstrong\u003ef\/7\u003c\/strong\u003e wide-field performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eIndividually Tested for Quality\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eEvery EdgeHD telescope undergoes final testing with a camera and artificial star to verify that the optical train performs to specification across the full field—so you can buy and image with confidence.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eIncluded Accessories\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e9×50 finderscope\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2\" mirror diagonal\u003c\/strong\u003e with 1.25\" adapter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e23 mm Luminos 2\" eyepiece\u003c\/strong\u003e (wide-angle, premium build)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCGE dovetail bar\u003c\/strong\u003e for secure mounting on compatible mounts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOptical design:\u003c\/strong\u003e EdgeHD Schmidt-Cassegrain\u003cbr\u003e\u003cstrong\u003eAperture:\u003c\/strong\u003e 279.4 mm (11\")\u003cbr\u003e\u003cstrong\u003eFocal length:\u003c\/strong\u003e 2800 mm • \u003cstrong\u003eFocal ratio:\u003c\/strong\u003e f\/10\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMagnification (supplied eyepiece):\u003c\/strong\u003e 122× (23 mm)\u003cbr\u003e\u003cstrong\u003eHighest useful magnification:\u003c\/strong\u003e 660×\u003cbr\u003e\u003cstrong\u003eLowest useful magnification:\u003c\/strong\u003e 40×\u003cbr\u003e\u003cstrong\u003eLimiting stellar magnitude:\u003c\/strong\u003e 14\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e\u003cbr\u003e• Rayleigh: 0.50\" • Dawes: 0.42\"\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLight-gathering power:\u003c\/strong\u003e 1593× (vs. human eye)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary obstruction:\u003c\/strong\u003e\u003cbr\u003e• Diameter 95 mm (34%) • Area 12%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptics:\u003c\/strong\u003e StarBright XLT coatings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube:\u003c\/strong\u003e Aluminum\u003cbr\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e 610 mm (24\")\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 312.4 mm (12.3\")\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 12.7 kg (28 lb)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDovetail:\u003c\/strong\u003e CGE dovetail bar\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy Choose the EdgeHD 11\" OTA?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✔ Astrograph-ready, flat field for modern large sensors\u003cbr\u003e✔ Exceptional resolution for galaxies, globular clusters \u0026amp; lunar\/planetary work\u003cbr\u003e✔ Modular focal options: \u003cstrong\u003ef\/10\u003c\/strong\u003e, \u003cstrong\u003ef\/7\u003c\/strong\u003e (reducer), \u003cstrong\u003ef\/2\u003c\/strong\u003e (Fastar)\u003cbr\u003e✔ Premium coatings and mechanical stability for demanding imaging\u003c\/p\u003e\n\u003cp\u003eA powerhouse optical tube for ambitious imagers and serious visual observers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSolar Safety Reminder\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNever look directly at the Sun with any optical instrument without a proper, secure solar filter. Permanent eye injury or equipment damage may occur.\u003c\/p\u003e\n","brand":"Celestron","offers":[{"title":"Default Title","offer_id":55897333039478,"sku":"050234105095","price":5099.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2235\/3014\/files\/Celestron-EdgeHD-11-Optical-Tube-Assembly-CGE-Dovetail-5.webp?v=1767004955","url":"https:\/\/welshastronomy.co.uk\/products\/celestron-edgehd-1100-ota-cge","provider":"The Welsh Astronomy Centre","version":"1.0","type":"link"}