{"product_id":"celestron-ultima-edge-18-mm-flat-field-1-25-eyepiece-93452","title":"Celestron Ultima Edge 18 mm Flat Field 1.25\" Eyepiece - 93452","description":"\u003ch3 style=\"text-align: center;\"\u003eCelestron Ultima Edge 18 mm Flat Field 1.25\" Eyepiece\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e18 mm Parfocal Ultra Flat Field eyepiece designed for 1.25” focusers\u003c\/li\u003e\n\t\u003cli\u003eCelestron Ultima Edge Series optical design\u003c\/li\u003e\n\t\u003cli\u003eIncredibly crisp views from center to edge of field\u003c\/li\u003e\n\t\u003cli\u003eFully multi-coated, 8-element lens design for excellent light transmission\u003c\/li\u003e\n\t\u003cli\u003eWide 65° Apparent Field of View (AFOV)\u003c\/li\u003e\n\t\u003cli\u003eGenerous 20 mm eye relief for comfort\u003c\/li\u003e\n\t\u003cli\u003eFold-down Rubber Eyeguard for comfortable viewing with or without eyeglasses\u003c\/li\u003e\n\t\u003cli\u003eMolded Rubber Grip Ring for non-slip handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThe Celestron Ultima Edge 18 mm has a generous 65° field of view, perfect for viewing planets, nebulae, and the Moon’s surface.  This eyepiece provides medium-power magnification, perfect for those observations when you want to see a larger FOV than with the shorter focal length E.P. See \"the whole picture\" with Ultima Edge eyepieces from Celestron. These flat-field eyepieces were designed to provide an ultra-sharp, ultra-clear, crisp image from the center all the way to the edge of the field of view. The 18 mm Ultima Edge eyepiece features fully multi-coated optics and an 8-element lens design, providing optimum light transmission.\n\u003c\/p\u003e\n\n \u003cp\u003e\nThe Celestron Ultima Edge 18 mm Flat Field 1.25\" Eyepiece uses a main housing which is machined from high grade aluminum with a black anodized outer surface. Its 1.25\" mounting barrel is internally threaded to accept standard 1.25\" filters and adapters. It is compatible with most 1.25” star diagonals and focusers. On the exterior, Celestron has included a uniquely designed, molded rubber Grip Ring for non-slip handling during observing sessions, even if you wearing gloves in colder weather. Observing with the 18 mm Ultima Edge eyepiece is comfortable for both eyeglass wearers and non-eyeglass wearers, because of the inclusion of a convenient fold-down rubber Eyecups and also the long 20 mm eye relief.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSpend more time observing with your telescope and less time focusing! When you buy more than one Ultima Edge eyepiece, you can switch between them without refocusing thanks to their parfocal design. With a set of Ultima Edge eyepieces in your kit, (except for the 24 mm) you'll be able to enjoy a wide range of high and low power views—and switch between them easily. \n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eNOTE:\u003c\/strong\u003e The Ultima Edge 24 mm eyepiece is Not parfocal with the rest of the models in this Ultima Edge line.\n\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eBarrel Size Diameter:\u003c\/td\u003e \u003ctd\u003e1.25\" (31.75 mm)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFocal Length:\u003c\/td\u003e \u003ctd\u003e18 mm (0.71\")\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eField Stop Diameter:\u003c\/td\u003e \u003ctd\u003e23.4 mm (0.93\")\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eApparent Field of View:\u003c\/td\u003e \u003ctd\u003e65°\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eOptical Design:\u003c\/td\u003e \u003ctd\u003eProprietary - Ultima Edge\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eNumber of Lens Elements:\u003c\/td\u003e \u003ctd\u003e8\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eNumber of Lens Groups:\u003c\/td\u003e \u003ctd\u003e5\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eOptical Coatings:\u003c\/td\u003e \u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eEye Relief:\u003c\/td\u003e \u003ctd\u003e20 mm (0.78\")\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eParfocal:\u003c\/td\u003e \u003ctd\u003eYes\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eFilter Threads:\u003c\/td\u003e \u003ctd\u003e1.25\" (M28.5X0.6)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eEye Guard:\u003c\/td\u003e \u003ctd\u003eYes- roll up\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eBody Material:\u003c\/td\u003e \u003ctd\u003eAluminum\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eWeight:\u003c\/td\u003e \u003ctd\u003e7.4 oz (209.7 g)\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eDimensions:\u003c\/td\u003e \u003ctd\u003e81 mm x 51 mm x 51 mm (3.19\" x 2\" x 2\")\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\t\u003ctr\u003e\n\t\t\u003ctd\u003eCelestron Product Number:\u003c\/td\u003e  \u003ctd\u003e93452\u003c\/td\u003e\n\t\u003c\/tr\u003e\n\u003c\/table\u003e\n","brand":"Celestron","offers":[{"title":"Default Title","offer_id":32102558892145,"sku":"CEL-93452","price":152.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/93452_18mm_Ultima_Edge_Eyepiece_01_570x380_3x_57378fa1-19c7-4213-a3ce-3a759630ba14.jpg?v=1776459043","url":"https:\/\/khanscope.com\/en-fr\/products\/celestron-ultima-edge-18-mm-flat-field-1-25-eyepiece-93452","provider":"Khan Scope Centre","version":"1.0","type":"link"}