{"product_id":"svbony-1-25-cheshire-collimating-eyepiece-w9154a","title":"SVBONY 1.25'' Cheshire Collimating Eyepiece (W9154A)","description":"\u003ch1 class=\"product-single__title\"\u003eSVBONY SV197 1.25'' Cheshire Collimating Eyepiece\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eSV197 cheshire collimating eyepiece fits for Newtonian and SCT reflector telescopes; also useful for aligning refractor optics very accurately;\u003c\/li\u003e\n\u003cli\u003eThe SV197 cheshire collimating eyepiece for accurate alignment of any Newtonian reflector telescope mirrors; ideal for ensuring the optical alignment;\u003c\/li\u003e\n\u003cli\u003ePeephole in top; The SV197 cheshire collimating eyepiece can directly see the result of the calibration;\u003c\/li\u003e\n\u003cli\u003ePrecision machined from aluminium with fine crosshairs and a clear bright mirror with sighting hole;\u003c\/li\u003e\n\u003cli\u003eEasy alignment; no batteries needed; for secondary mirror collimation; can be used only during the day;\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThe SV197 cheshire collimating eyepiece for accurate alignment of any Newtonian reflector telescope mirrors; ideal for ensuring the optical alignment\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eMade of high-quality aluminum material. Anti-rust, wear-resistant, and durable. \u003c\/span\u003e\u003cspan\u003eCNC precision manufacturing, oxidation black, steel cross wire. the crosshairs are clearer and easier to use.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe inner structure can reduce light reflection to improve the clearness of view.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCollimation eyepiece is more accurate than the normal collimation tool, can help you better enjoy star watching-fun. Suitable for Newtonian Telescopes.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6385872182173339519705406_1024x1024.jpg?v=1747936926\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2\u003eFits in 1.25 inch focusers\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eSV197 cheshire collimating eyepiece can be inserted into 1.25 inch focusers or diagonals.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6385872220150846934210861_1024x1024.jpg?v=1747936968\"\u003e\u003c\/div\u003e\n\u003ch2\u003eMore Accurate than the Normal Collimation Tool\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eCollimation eyepiece is more accurate than the normal collimation tool, can help you better enjoy star watching-fun. Suitable for Newtonian Telescopes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6385872222945862758631936_1024x1024.jpg?v=1747937013\"\u003e\u003c\/div\u003e\n\u003ch2\u003eHow To Collimate Telescope With Cheshire Eyepiece:\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe view through the Cheshire eyepiece during the collimation will differ between telescopes. For fast telescopes (f5 and below), it will be little off-center, and for the slow telescopes (f5 and above), the view will be more centered and easier to collimate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1.The goal here is to center the primary mirror reflection in the secondary mirror and reflection from the Cheshire with the secondary mirror.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2.To achieve that, you have to use the adjustment screws on the secondary and primary mirrors while looking through the Cheshire eyepiece collimator tool.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSV197\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e156g\/5.51oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Size\u003c\/td\u003e\n\u003ctd\u003e1.25''(31.75mm) \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial of Crosshairs  \u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material and Processing\u003c\/td\u003e\n\u003ctd\u003eAluminum \u0026amp; CNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimension\u003c\/td\u003e\n\u003ctd\u003e141×41×32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e1.25'' Cheshire Collimating Eyepiece (W9154A)\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/svbony-warranty\" target=\"_blank\"\u003eSvbony 1-Year Warranty\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":46781599318245,"sku":"SVB-W9154A","price":36.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1_b8ecd8de-2d84-42e4-8633-ae3aae0641ea.jpg?v=1777043678","url":"https:\/\/istronomyplus.com\/products\/svbony-1-25-cheshire-collimating-eyepiece-w9154a","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}