{"product_id":"svbony-12-5mm-illuminated-reticle-plossl-crosshair-eyepiece-125in","title":"SVBONY 12.5mm Illuminated Reticle Plössl Crosshair Eyepiece - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e12.5mm Focal Length\u003c\/li\u003e\n\u003cli\u003e40° Apparent Field of View\u003c\/li\u003e\n\u003cli\u003e1.25\" Barrel Diameter\u003c\/li\u003e\n\u003cli\u003eIlluminated Double Crosshair Reticle\u003c\/li\u003e\n\u003cli\u003e4-Element Plossl Optical Design\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\u003eDownloads\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\u003eSvbony 1.25\" 12.5mm Illuminated Reticle Eyepiece Plossl Crosshair Kit\u003c\/h2\u003e\n\u003cp\u003eThe Svbony 1.25\" 12.5mm Illuminated Reticle Eyepiece combines a classic 4-element Plossl optical design with a red-illuminated double crosshair to deliver tack-sharp alignment. With a 40° apparent field of view, this eyepiece is a dedicated tool for accurately centering guide stars, performing precise polar alignment, and calibrating the pointing accuracy of your Go-To mount.\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\u003ePrecision Alignment: The 12.5mm Red-Illuminated Double Crosshair\u003c\/h3\u003e\n\u003cp\u003eThe core of this eyepiece is its illuminated double crosshair reticle. Unlike a single-line reticle, the double crosshair allows you to perfectly frame a star within the central box, eliminating any guesswork when centering an object. The adjustable red LED illumination ensures the reticle is clearly visible against a dark sky without compromising your night vision.\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\u003eA 4-Element Plossl with a 40° Field\u003c\/h3\u003e\n\u003cp\u003eBased on a 4-element Plossl design, the eyepiece provides sharp, high-contrast views suitable for its alignment task. The 40° apparent field of view is intentionally constrained to give you a clear, focused area for centering stars. Fully multi-coated (FMC) lenses and blackened internal surfaces maximize light transmission and suppress internal reflections, ensuring your target star appears as a bright, distinct point against a dark background.\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\u003eGo-To Centering and Guiding in any 1.25\" Focuser\u003c\/h3\u003e\n\u003cp\u003eWeighing only 170g and fitting any standard 1.25\" focuser, this eyepiece is a universal tool for any telescope setup. It is essential for the final, high-magnification centering step in a multi-star Go-To alignment, dramatically improving pointing accuracy across the sky. For imagers, it serves as an excellent manual guiding eyepiece in an off-axis guider or a separate guidescope, allowing for precise corrections to keep your target locked for long exposures.\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\"\u003eWhat is the Svbony 12.5mm Illuminated Eyepiece primarily used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis Svbony eyepiece is a specialized tool designed for high-precision centering tasks. Its primary uses are for \u003cstrong\u003epolar alignment\u003c\/strong\u003e, \u003cstrong\u003eGo-To mount alignment\u003c\/strong\u003e, and \u003cstrong\u003emanual guiding\u003c\/strong\u003e for astrophotography. It can also be used for measuring position angles of double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the illuminator on the Svbony 12.5mm eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe illuminator is powered by \u003cstrong\u003ethree 1.5V alkaline batteries\u003c\/strong\u003e, which are housed within the illuminator module itself. The brightness of the red LED crosshairs can be adjusted by rotating the dial on the illuminator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 40° field of view on the Svbony eyepiece wide enough for finding objects?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the 40° field of view is relatively narrow and not intended for searching for or \"finding\" objects. This is a purposeful design choice. The eyepiece is meant to be used \u003cstrong\u003eafter\u003c\/strong\u003e an object is already in the field of a wider eyepiece, providing the higher magnification needed to precisely center it on the crosshairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this Svbony 12.5mm eyepiece help with polar aligning my mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor mounts without a dedicated polar scope, you can use this eyepiece in your main telescope to perform a drift alignment. By monitoring a star's drift relative to the fixed crosshairs, you can make precise adjustments to your mount's altitude and azimuth to achieve a highly accurate polar alignment, which is critical for long-exposure imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Svbony 12.5mm Illuminated Eyepiece for manually guiding on a star like Vega (Alpha Lyrae) with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. An 8\" f\/10 SCT has a focal length around 2000mm, where the 12.5mm eyepiece provides 160x magnification. This is an excellent magnification for manual guiding. You would place a bright star like Vega in the double crosshairs and make small corrections with your mount's hand controller to keep it perfectly centered for the duration of your main camera's exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of a \"double crosshair\" reticle on this Svbony eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA double crosshair reticle consists of two closely spaced parallel lines for both the horizontal and vertical axes. This creates a small, empty box in the center. The goal is to place your target star neatly inside this box rather than trying to hide it behind a single, solid line. This makes it much easier to judge when the star is perfectly centered.\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\u003eEyepiece Type\u003c\/td\u003e\n\u003ctd\u003eIlluminated Reticle Eyepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Design\u003c\/td\u003e\n\u003ctd\u003ePlossl (4 elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e12.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Field of View\u003c\/td\u003e\n\u003ctd\u003e40°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Coating\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated (FMC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReticle\u003c\/td\u003e\n\u003ctd\u003eDouble Crosshair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eThree 1.5V alkaline batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e70 x 60 x 60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e170g\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/svbony-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSvbony Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SVBONY","offers":[{"title":"Default Title","offer_id":52861228876061,"sku":"SV-F9132A","price":41.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/SVBONY-1-25-12-5mm-Illuminated-Reticle-Eyepiece-Plossl-Crosshair-Kit-1_5e179808-f0a7-4c2c-ae5e-401d436df40d.jpg?v=1788659627","url":"https:\/\/davidastro.com\/fr\/products\/svbony-12-5mm-illuminated-reticle-plossl-crosshair-eyepiece-125in","provider":"David Astro","version":"1.0","type":"link"}