{"title":"Collimation Tools","description":"\u003cp\u003eTools for lining up a telescope's optics — laser collimators for fast Newtonians and Dobsonians, Cheshire eyepieces and crosshair sight tubes for optical alignment, and replacement collimation knobs and springs for SCTs, Maksutovs and Newtonians.\u003c\/p\u003e\u003cp\u003eGoods ship factory-sealed; we don't collimate or adjust anything before despatch. If you're not sure which tool suits your focuser or mirror cell, ask us before you order and we'll confirm the fit.\u003c\/p\u003e","products":[{"product_id":"celestron-sct-8-f-10-standard","title":"Celestron SCT 8 f\/10 standard","description":"Celestron  SCT 8  f\/10 standard with silver collimation screws","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190466159,"sku":"C8std","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c8std1-2__12579.jpg?v=1766547577"},{"product_id":"celestron-sct-8-f-10-metric","title":"Celestron SCT 8 f\/10 metric","description":"Celestron SCT 8  f\/10 metric Most with black Phillips collimation screws (CPC 800)","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190498927,"sku":"C8met","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c8metric1-2__81015.jpg?v=1766547582"},{"product_id":"celestron-sct-8-edgehd-collimation-knobs","title":"Celestron SCT 8 EdgeHD Collimation knobs","description":"\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e Black oxide steel (black) or stainless steel (silver), 12 mm (1\/2 ) diameter\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e Black oxide or stainless steel\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThese knobs will fit \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eonly\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e the Celestron 8  SCT with \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/SCT\/page26\/assets\/C8EdgeHDfront.gif\" rel=\"self\" style=\"color: rgb(0, 128, 255);\"\u003eFastar secondary and EdgeHD optics\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e. These telescopes are marked  EDGEHD OPTICS  on the corrector ring. Do not use these knobs on the non-EdgeHD Fastar secondary; the screws on these knobs are too long. Be sure to check that the thread length on our knobs matches the thread length on the factory collimation screws.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe factory dust cover will fit normally with Bob s Knobs installed.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190531695,"sku":"C8edg","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c8edgehd__02265.jpg?v=1766547587"},{"product_id":"celestron-sct-9-25-f-10-standard","title":"Celestron SCT 9.25 f\/10 standard","description":"Celestron  SCT 9.25  f\/10 standard Most with silver collimation screws","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190761071,"sku":"C9.25std","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c9_25std__80936.jpg?v=1766547591"},{"product_id":"celestron-sct-9-25-fastar-knobs","title":"Celestron SCT 9.25 Fastar knobs","description":"\u003cbr class=\"innova\"\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190793839,"sku":"C9.25fst","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c9_25edg__32905.jpg?v=1766547597"},{"product_id":"celestron-sct-11-f-10-standard","title":"Celestron SCT 11 f\/10 standard","description":"Celestron SCT 11  f\/10 standard Silver collimation screws and flat secondary housing","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012190892143,"sku":"C11std","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c11standard__93974.jpg?v=1766547604"},{"product_id":"celestron-sct-11-f-10-metric","title":"Celestron SCT 11 f\/10 metric","description":"Celestron SCT 11  f\/10 metric. Most with black Phillips collimation screws (CPC 1100, EdgeHD, and metric Fastar)","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012207603823,"sku":"C11met","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c11metric__89962.jpg?v=1766547606"},{"product_id":"celestron-sct-11-f-10-standard-fastar","title":"Celestron SCT 11 f\/10 standard Fastar","description":"\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Celestron 11” (28 cm) f\/10 SCT versions (metal or carbon fiber tube) with standard thread factory collimation screws and \u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; text-decoration: underline;\"\u003e\u003ca href=\"http:\/\/www.bobsknobs.com\/SCT\/page25\/page101\/index.html\" rel=\"self\" title=\"C11FastarSilver\" style=\"\"\u003e\"Trifid\" rotary cover Fastar secondary housing\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e. Factory collimation screws are silver Phillips. These knobs will also fit the \u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; text-decoration: underline;\"\u003e\u003ca href=\"http:\/\/www.bobsknobs.com\/SCT\/page25\/page102\/index.html\" rel=\"self\" title=\"C11Hyperstar\" style=\"\"\u003eC11 with Starizona Hyperstar\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e if the collimation screws have standard threads.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black plastic, 16 mm (5\/8”) diameter\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black anodized aluminum alloy\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"\"\u003e\n\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThese telescopes can have factory collimation screws with either standard or metric threads. Silver Phillips collimation screws are standard thread. Some black Phillips collimation screws are also standard thread. See our \u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/www.bobsknobs.com\/SCT\/page25\/page51\/C11hints.html\" rel=\"self\" title=\"C11 Hints\" style=\"\"\u003ehints\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e for more information. If you discover your knobs have the wrong threads, you may return your knobs for exchange at no additional cost. Alternatively, you can order knobs with both standard and metric thread screws and return the unused set for a full refund.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"\"\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe factory dust cover will fit normally with Bob’s Knobs installed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"\"\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe rotary secondary cover must remain open when the knobs are installed. The cover is cosmetic only and will not affect operation of the telescope.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003c\/span\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012235948143,"sku":"C11stdfst","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c11metfst1-2__59562.jpg?v=1766547613"},{"product_id":"celestron-sct-11-f-10-metric-fastar","title":"Celestron SCT 11 f\/10 metric Fastar","description":"\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);\"\u003ePart:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003eC11metfst\u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e Celestron 11  (28 cm) f\/10 SCT versions (metal or carbon fiber tube) with metric thread factory collimation screws and \u003c\/span\u003e\u003cspan style=\"font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; color: rgb(0, 0, 233); text-decoration: underline; background-color: rgb(255, 255, 255);\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/SCT\/page25\/assets\/C11StdSilPhiFst1.jpg\" rel=\"self\" style=\"color: rgb(0, 128, 255);\"\u003e\"Trifid\" rotary cover Fastar secondary housing\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e. Factory collimation screws are black Phillips. These knobs will fit the \u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/SCT\/page25\/assets\/C11EdgeHD.jpg\" rel=\"self\" style=\"color: rgb(0, 128, 255);\"\u003eC11 with EdgeHD optics\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e. They will also fit the \u003c\/span\u003e\u003cspan style=\"font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; color: rgb(0, 0, 233); text-decoration: underline; background-color: rgb(255, 255, 255);\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/SCT\/page25\/assets\/C11hyperstar.jpg\" rel=\"self\" style=\"color: rgb(0, 128, 255);\"\u003eC11 with Starizona Hyperstar\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e if the collimation screws have metric threads.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e Black plastic, 10 mm (3\/8 ) diameter\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e Stainless steel\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold; background-color: rgb(255, 255, 255);\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-size: 12px; font-family: Arial, Verdana, Helvetica, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThese telescopes can have factory collimation screws with either standard or metric threads. Most models with black Phillips collimation screws have metric threads. There are a few black Phillips screws with standard threads. See our \u003c\/span\u003e\u003cspan style=\"font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/SCT\/page25\/page51\/C11hints.html\" rel=\"self\" title=\"C11 Hints\" style=\"color: rgb(0, 128, 255);\"\u003ehints\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e for more information. If you discover your knobs have the wrong threads, you may return your knobs for exchange at no additional cost. Alternatively, you can order knobs with both standard and metric thread screws and return the unused set for a full refund.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe factory dust cover will fit normally with Bob s Knobs installed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe rotary secondary cover must remain open when the knobs are installed. The cover is cosmetic only and will not affect operation of the telescope.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012267438191,"sku":"C11metfst","price":39.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/c11metfst1-2__59817.jpg?v=1766547619"},{"product_id":"collimation-knob-for-secondary-mirror","title":"Collimation knob for secondary mirror","description":"\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003ePart:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eCNsec30 or CNsec35\u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e SkyWatcher (5 , 6 , 8 , 10 , 12 , 14 , 16 ) Newtonian telescopes\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eMeade Lightbridge models (8 , 10 , 12 , 16 )\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e Celestron C6-N\/NGT, C8-N\/NGT, and C10-N\/NGT Newtonian telescopes\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits: \u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eOrion \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eSkyQuest XT-series with factory set-style secondary collimation screws. This is the most common XT-series secondary.\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e Celestron C8-N\/NGT, C10-N\/NGT, \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eOrion Astrograph, Astroview, SkyQuest XX and XT, Skyview, SkyWatcher, StarBlast, GSO, and many others.\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black plastic, 13 mm (1\/2 ) diameter Qty 3\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Stainless steel\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eWe offer knobs with screws having either 30 mm or 35 mm length. Order knobs with a \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/Newt\/page37\/styled\/XTphi.html\" title=\"Mesuring Secondary Screw Length\" style=\"color: rgb(0, 128, 255);\"\u003escrew length\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e sufficient to allow the knobs to clear the secondary housing. Knobs with 30 mm screws are the most common in this configuration. However, the 12 , 14 , and 16  sometimes require knobs with 35 mm screw length.\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012275662959,"sku":"CNsec30","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/cnsec30-new__49872.png?v=1766547623"},{"product_id":"celestron-powerseeker-127-primary-mirror-collimation-knobs","title":"Celestron PowerSeeker 127 primary mirror collimation knobs","description":"Collimation knob for Celestron Power Seeker 127mm","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280283247,"sku":"PS127pri","price":37.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ps127pri__33700.jpg?v=1766547628"},{"product_id":"meade-celestron-orion","title":"Meade \/ Celestron \/ Orion","description":"\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003ePart:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eCNsec30 or CNsec35\u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e SkyWatcher (5 , 6 , 8 , 10 , 12 , 14 , 16 ) Newtonian telescopes\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eMeade Lightbridge models (8 , 10 , 12 , 16 )\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e Celestron C6-N\/NGT, C8-N\/NGT, and C10-N\/NGT Newtonian telescopes\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits: \u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eOrion \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eSkyQuest XT-series with factory set-style secondary collimation screws. This is the most common XT-series secondary.\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px;\"\u003e Celestron C8-N\/NGT, C10-N\/NGT, \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; line-height: normal;\"\u003eOrion Astrograph, Astroview, SkyQuest XX and XT, Skyview, SkyWatcher, StarBlast, GSO, and many others.\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black plastic, 13 mm (1\/2 ) diameter\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Stainless steel\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eWe offer knobs with screws having either 30 mm or 35 mm length. Order knobs with a \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/Newt\/page37\/styled\/XTphi.html\" title=\"Mesuring Secondary Screw Length\" style=\"color: rgb(0, 128, 255);\"\u003escrew length\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e sufficient to allow the knobs to clear the secondary housing. Knobs with 30 mm screws are the most common in this configuration. However, the 12 , 14 , and 16  sometimes require knobs with 35 mm screw length.\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ol\u003e \u003c\/div\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280479855,"sku":"CNsec35","price":33.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/cnsec53__46671.jpg?v=1766547633"},{"product_id":"meade-sct-8-f-10-3-screw","title":"Meade SCT 8 f\/10 3-screw","description":"\u003cbr class=\"innova\"\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280578159,"sku":"M8-3","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/m8-3__81992.jpg?v=1766547638"},{"product_id":"meade-sct-8-f-10-6-screw","title":"Meade SCT 8 f\/10 6-screw","description":"\u003cbr class=\"innova\"\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280610927,"sku":"M8-6","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/m8-6a__77456.jpg?v=1766547643"},{"product_id":"meade-sct-10-f-10-3-screw","title":"Meade SCT 10 f\/10 3-screw","description":"\u003cbr class=\"innova\"\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280643695,"sku":"M10-3","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/m10-3__39175.jpg?v=1766547648"},{"product_id":"meade-sct-10-f-10-6-screw","title":"Meade SCT 10 f\/10 6-screw","description":"\u003cbr class=\"innova\"\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280676463,"sku":"M10-6","price":33.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/m10-6__12805.jpg?v=1766547652"},{"product_id":"meade-sct-12-3-and-4-screw-f-10","title":"Meade SCT 12 3- and 4-screw f\/10","description":"\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003eWe offer knobs for all versions of the Meade 12” f\/10 and f\/8 Schmidt-Cassegrain secondary, including those with three, four, and six secondary screws. (The extra screws on the four- and six-screw versions are for secondary disassembly, not collimation.) Select knobs for your telescope from the list below.\u003c\/span\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280709231,"sku":"M12-3","price":38.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/m12-3__04274.jpg?v=1766547657"},{"product_id":"skywatcher-celestron-collimation-knob","title":"Skywatcher \/ Celestron Collimation knob","description":"\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003ePart:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eSWpri\u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e SkyWatcher Newtonian telescopes with \u003c\/span\u003e\u003ca href=\"http:\/\/bobsknobs.com\/Newt\/page66\/page130\/index.html\" rel=\"self\" title=\"SWpriFactoryScrews\" style=\"color: rgb(0, 128, 255); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003efactory collimation screws\u003c\/a\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e.\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003ePrimary collimation\u003cbr\u003e\u003c\/span\u003e\u003cul class=\"(null)\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black plastic, 16 mm (5\/8 ) diameter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Stainless steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003ePrimary Lock\u003cbr\u003e\u003c\/span\u003e\u003cul class=\"(null)\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs: \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eRed plastic, 16 mm (5\/8 ) diameter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Stainless steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"color: rgb(102, 102, 102); background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"color: rgb(102, 102, 102); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eOur knobs will fit only a primary with \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/Newt\/page66\/page130\/index.html\" rel=\"self\" title=\"SWpriFactoryScrews\" style=\"color: rgb(0, 128, 255);\"\u003efactory collimation screws\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e. If your telescope already has \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/bobsknobs.com\/Newt\/page66\/page131\/index.html\" rel=\"self\" title=\"SWpriFactoryKnobs\" style=\"color: rgb(0, 128, 255);\"\u003efactory collimation knobs\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e (see Item B below) our knobs will not fit.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe telescope optical tube assembly will clear the Dobsonian rocker box with primary knobs installed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eKnobs with shorter screws and spacers replace the factory flathead Phillips collimation screws. Knobs with longer screws replace the factory set-style (grub) locking screws.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eSince the factory collimation and locking screws are close together, knobs must be staggered in height. The locking knobs protrude further than the collimation knobs, and they are red in color.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eProtect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44012280741999,"sku":"SWpri","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sw_r0026bknobs2__11130.jpg?v=1766547663"},{"product_id":"laser-collimator-with-side-view","title":"Laser collimator with side view","description":"\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003eThe Antares Laser Collimator allows you to adjust both of the telescope's mirrors with a simple, precise, two-step procedure. \u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003eThe collimator fits 1.25\" focusers  and emits a variable red laser beam into the telescope. Tilt the secondary mirror so that the red laser dot hits the centre of the primary mirror. Then tilt the primary mirror so that the return beam hits the white plate angled at 45 degrees in the collimator's window. Adjust the mirror until the return beam lines up with the original beam. \u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003eThat's it! \u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003eYour scope will be collimated for optimum performance with this high quality laser collimator in only one or two minutes!\u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003eMany videos on Youtube provide excellent instruction on how to use your collimator\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 12px; line-height: 16.200000762939453px; font-family: Arial, Helvetica, sans-serif; color: rgb(50, 50, 50);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e                   \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/8G98RTP6jbY\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":44012304400495,"sku":"LC","price":57.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/collimator-125-laser__27510.jpg?v=1766547704"},{"product_id":"antares-1-25-cheshire-collimator","title":"Antares 1.25\" Cheshire Collimator","description":"\u003cp style=\"font-family: Verdana; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eAntares Deluxe Cheshire\/Sight Tube Combo Telescope Collimation Eyepiece, CColli\u003c\/p\u003e\u003cp style=\"font-family: Verdana; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eDeluxe Cheshire Telescope Collimator.\u003c\/p\u003e\u003cp style=\"font-family: Verdana; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eGreat for complete alignment of telescope componets and mirrors. Fit into standard 1 1\/4 inch eyepiece sockets.\u003c\/p\u003e\u003cul style=\"font-family: Verdana; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003eHelps perfectly align Newtonian optics and components\u003c\/li\u003e\n\u003cli\u003e5 1\/2 inch tube for accuracy\u003c\/li\u003e\n\u003cli\u003eStardard 1 1\/4 inch size\u003c\/li\u003e\n\u003cli\u003eIt has a Peephole on top and Crosshairs at the bottom for precise centering of the optics\u003c\/li\u003e\n\u003cli\u003eMade of Aluminum\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":44012785565807,"sku":"RN","price":49.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/14190-l_1__41056.jpg?v=1766548209"},{"product_id":"knobs-for-meade-lightbridge-12-f-5-primary","title":"Knobs for Meade Lightbridge 12 f\/5 Primary","description":"\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Meade Lightbridge12  (30 cm) f\/5 telescopes.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003ePrimary collimation\u003cbr\u003e\u003c\/span\u003e\u003cul class=\"(null)\" style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Black plastic, 30 mm (1-1\/4 ) diameter, 5-point fluted\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Plated steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003ePrimary Lock\u003cbr\u003e\u003c\/span\u003e\u003cul class=\"(null)\" style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs: \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eBlack plastic, 25 mm (1 ) diameter, knurled\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e Stainless steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNotes:\u003c\/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003col class=\"arabic-numbers\" style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eIf your primary looks different from our photograph, or already has \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/www.bobsknobs.com\/Newt\/page22\/page127\/index.html\" title=\"MLBFactoryKnobs\"\u003efactory collimation knobs\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e, these knobs will not fit.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eThe telescope optical tube assembly will clear the rocker box with primary knobs installed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eOne of the primary mirror knobs may interfere with the cooling fan connector. The plug will \u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003ca href=\"http:\/\/www.bobsknobs.com\/Newt\/page22\/page128\/index.html\" rel=\"self\" title=\"MLB12FanConnector\"\u003efit properly between the knob flutes\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e, so leave this one knob stationary and collimate using the remaining knobs. If desired, you can leave the factory collimation screw that is next to the fan connector in place.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44013369163887,"sku":"MLB12pri","price":42.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/mlb12pri__20156.jpg?v=1766551570"},{"product_id":"springs-for-meade-lightbridge-gso-8-10-12-primary","title":"Springs for Meade Lightbridge (GSO) 8”, 10\", 12\" Primary","description":"\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003ePart:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eCNspr\u003cbr\u003e\u003c\/span\u003e\u003cstrong style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12.48px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003eMeade Lightbridge and GSO 8”, 10\", 12\" Newtonian telescopes.\u003cbr\u003e\u003cbr\u003ePrimary mirror springs as supplied by the factory can sag from the weight of the mirror cell. Our stainless steel replacement springs are stronger and provide adequate support to maintain primary mirror collimation. We recommend that the mirror locking screws remain in place for additional control. \u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-variant-numeric: normal; font-variant-east-asian: normal; background-color: rgb(255, 255, 255); font-stretch: normal; font-size: 12px; line-height: normal; font-family: Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eNote: These springs will not fit the Lightbridge 16\"\u003c\/span\u003e\u003c\/div\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":44013398720623,"sku":"CNspr","price":30.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/mlbspr__89972.jpg?v=1766552971"},{"product_id":"image-plane-tilt-adjuster","title":"Image Plane Tilt Adjuster","description":"\u003cspan style=\"font-size: 18.6667px; font-family: Arial;\"\u003eIf you are experiencing an issue with your images in the corners you may have a tilted sensor on your camera.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 18.6667px; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 18.6667px; font-family: Arial;\"\u003eThe Image Plane Tilt Adjuster will all you to make small adjustments to square your sensor with the overall image plane.  This accessory is meant for the William Optics Cat series of scopes.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 18.6667px; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 18.6667px; font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44013542277231,"sku":"M-FD-RC51","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Tilit_2525201__47630.1682640427.1280.1280.jpg?v=1766555821"},{"product_id":"adjustable-pin-type-face-wrench-o-2mm","title":"Adjustable pin type face wrench 2mm","description":"\u003cul style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin-top: 1rem; margin-bottom: 0px; color: rgb(76, 81, 84); font-family: \" libre franklin sans-serif font-size:=\"\" padding:=\"\" margin-left:=\"\"\u003e\n\u003cli style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); list-style: disc !important;\"\u003eOptional tool for unmounting the M48 \/ T-2 insert-ring from the Baader Protective CANON T-Ring\u003c\/li\u003e\n\u003cli style=\"box-sizing: inherit; -webkit-font-smoothing: antialiased; text-size-adjust: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); list-style: disc !important;\"\u003eAlso fits many other Baader rings and adapters with dual spanner holes on their face\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013603258479,"sku":"SPANNER","price":36.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2450062-17-A-N-1_2000x1333__43863.jpg?v=1766557473"},{"product_id":"deluxe-laser-collimator","title":"Deluxe Laser Collimator","description":"\u003cp\u003eThe Starfield Deluxe Newtonian laser collimator has a long 1.25\" barrel and a machined rim for proper alignment.\u003c\/p\u003e\n\u003cp\u003eUsing the laser collimator makes correct collimating of a Newtonian\/Dobsonian telescope simple.. Collimation is completed within a very short time at the observing site in the dark, without any additional accessories being required. Precisely manufactured, it sits snugly in the focuser in the optical axis. CNC machined, the 45° angled viewing port for easier viewing from the rear of the telescope. The matte projection area allows lateral detection of the reflection and makes main mirror collimation easy - even with large telescopes.\u003c\/p\u003e\n\u003cp\u003e* Factory set, using three recessed screws located on this 1.25\" Laser Collimator's body, it is important that these settings are not adjusted or your collimator will not work as intended. Powered via three included LR44 lithium batteries.\u003c\/p\u003e","brand":"Starfield","offers":[{"title":"Default Title","offer_id":44013742456943,"sku":"SF-OC-3","price":89.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IMG_6604__65279.jpg?v=1766561423"},{"product_id":"laser-colli-mkiii-laser-collimator","title":"Laser-Colli MkIII (laser collimator)","description":"\u003cul style=\"box-sizing: border-box; margin: 0px 0px 1em 1em; padding: 0px; list-style-position: initial; list-style-image: initial; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eLaser-Collimator for easy collimation of your telescope in 1-2 minutes\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eHigh-quality, impact-resistant and highly accurate laser, with concealed setscrews\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003ePrecision-machined, hard-anodized barrel instead of the less accurate 1¼\" chrome barrel\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eHandle protector made of silicone rubber facilitates handling with gloves\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0.5em 0px 0px 1.5em; padding: 0px; list-style: disc;\"\u003eSuitable for Newton and SC telescopes, instructions included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013753073775,"sku":"LASER","price":134.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/laser-colli-mark-iii-0b4__31232.jpg?v=1766561859"},{"product_id":"takahashi-collimating-eyepiece-newtonians-cassegrains","title":"Takahashi Collimating Eyepiece for Newtonians \u0026 Cassegrains","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Takahashi Collimating Eyepiece is a machined aluminum sighting tool that inserts into a standard 1.25″ (31.75 mm) eyepiece holder or focuser drawtube. Looking through the central peephole, you see the reflection of your primary mirror (on a Newtonian) or secondary\/corrector assembly (on a Cassegrain or Ritchey-Chrétien) centered on the sighting hole when the optics are aligned. It has no lens elements — this is a mechanical collimation tool, not a viewing eyepiece. At 35 mm in diameter, 45 mm long and 45 g, it threads onto the \u003ca href=\"\/products\/takahashi-newtonian-collimating-tube-crosshair\"\u003eNewtonian Collimating Tube with Crosshair\u003c\/a\u003e for a combined Cheshire-eyepiece setup, or works on its own for a quick sighting check.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Newtonian reflector and adjust your own mirror collimation, or if you run a Cassegrain or Ritchey-Chrétien telescope and check secondary mirror alignment between imaging sessions.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined aluminum body:\u003c\/strong\u003e holds a consistent, repeatable fit in the focuser or eyepiece holder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed 1.25″ barrel:\u003c\/strong\u003e drops straight into any standard visual back or drawtube, no adapter needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflective sighting face:\u003c\/strong\u003e shows the primary mirror or secondary assembly reflected back through the peephole, centered when collimation is correct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and pocketable:\u003c\/strong\u003e 35 mm diameter, 45 mm long, 45 g — easy to keep with your other collimation tools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe tool is a simple sighting tube: a small peephole at the eye end and a reflective surface at the objective end, with an M36.4 x 1 male thread on the objective side. Used alone, it gives you a fast go\/no-go check of primary mirror centering on a Newtonian. Threaded onto the \u003ca href=\"\/products\/takahashi-newtonian-collimating-tube-crosshair\"\u003eNewtonian Collimating Tube with Crosshair\u003c\/a\u003e, the two work together as a Cheshire eyepiece — the tube supplies a wire crosshair reference, and this eyepiece supplies the sighting hole, giving you a repeatable reference point for centering the secondary mirror shadow on Takahashi Epsilon astrographs and other Newtonian designs.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00441-schema.png?v=1786912645\" alt=\"Takahashi collimating eyepiece TKA00441 half-section dimensional schematic\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003ePre-session collimation checks on Newtonian reflectors; secondary mirror centering on Cassegrain and Ritchey-Chrétien telescopes; a first-pass sighting reference before fine-tuning with a laser collimator or star test.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eFits any 1.25″ (31.75 mm) focuser drawtube or eyepiece holder. The M36.4 x 1 male thread on the objective end mates with the Newtonian Collimating Tube with Crosshair for combined Cheshire-eyepiece alignment on Newtonian and astrograph optical tubes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt has no lens elements.\u003c\/strong\u003e It is built for sighting down the optical axis, not for viewing the night sky — a standard eyepiece handles that job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt does not include a crosshair.\u003c\/strong\u003e The crosshair reference for secondary mirror centering comes from the paired Newtonian Collimating Tube, which threads on separately.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It inserts into the focuser exactly like an eyepiece, with nothing to calibrate before use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eChecking whether a Newtonian primary mirror or a Cassegrain\/RC secondary is centered on the optical axis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for astrophotography setups?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a visual alignment tool used before imaging, not a component of the imaging train itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need the collimating tube as well?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFor a full Cheshire-eyepiece setup with a crosshair reference on a Newtonian, yes — the two are designed to thread together.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA machined 1.25″ sighting tool for checking mirror alignment on Newtonian, Cassegrain and Ritchey-Chrétien telescopes, usable alone for a quick check or threaded to the collimating tube for a full Cheshire-eyepiece reference.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047077204079,"sku":"TAK-TKA00441","price":72.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tce0020_2_2.jpg?v=1786912905"},{"product_id":"takahashi-newtonian-collimating-tube-crosshair","title":"Takahashi Newtonian Collimating Tube with Crosshair","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Newtonian Collimating Tube with Crosshair is a machined alignment tool built for centering the secondary mirror on Takahashi's Epsilon-series Newtonian astrographs. A wire crosshair is stretched across the objective end of the tube, giving you a fixed reference point to center against the reflection of the primary mirror. It threads via M36.4 x 1 to the \u003ca href=\"\/products\/takahashi-collimating-eyepiece-newtonians-cassegrains\"\u003eCollimating Eyepiece\u003c\/a\u003e (TKA00441, sold separately), and together the two function as a Cheshire eyepiece. At 39.5 mm in diameter, 80 mm long and 50 g, it fits in a case with the rest of your collimation kit.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you run a Takahashi Epsilon astrograph and check secondary mirror centering as part of your regular collimation routine.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed wire crosshair:\u003c\/strong\u003e stretched across the objective end, giving a stable reference point for centering the primary mirror's reflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM36.4 x 1 male thread:\u003c\/strong\u003e mates directly to the Collimating Eyepiece for a combined Cheshire-eyepiece assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined construction:\u003c\/strong\u003e holds the crosshair's position precisely, session after session.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose-built for Epsilon optics:\u003c\/strong\u003e matched to the secondary mirror geometry of Takahashi's hyperbolic Newtonian astrographs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThreaded to the Collimating Eyepiece, the assembly works as a Cheshire eyepiece: you sight through the eyepiece's peephole, and the crosshair in this tube gives you a fixed target to center the secondary mirror's shadow against. The crosshair wire is taped across a notch at the tube end and can be replaced if it's ever damaged.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00442-schema.png?v=1786912644\" alt=\"Takahashi Newtonian collimating tube TKA00442 half-section dimensional schematic\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eSecondary mirror collimation on Takahashi Epsilon 130D, Epsilon 160ED and Epsilon 180ED astrographs; paired use with the Collimating Eyepiece for a full Cheshire-style alignment check before an imaging session.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThreads via M36.4 x 1 to the \u003ca href=\"\/products\/takahashi-collimating-eyepiece-newtonians-cassegrains\"\u003eCollimating Eyepiece\u003c\/a\u003e (TKA00441), which is sold separately and required to complete the Cheshire-eyepiece assembly.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt ships without the Collimating Eyepiece.\u003c\/strong\u003e The two parts are sold separately and thread together to form the full Cheshire-eyepiece assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTakahashi matches it to its own Epsilon astrographs.\u003c\/strong\u003e If you're aligning a different Newtonian, send us the model and we can help you work out the right collimation tool for it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads onto the Collimating Eyepiece by hand, and the crosshair is already fitted at the factory.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCentering the secondary mirror on a Takahashi Epsilon astrograph as part of routine collimation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need any other accessories?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes — the Collimating Eyepiece (TKA00441) threads onto this tube to complete the Cheshire-eyepiece assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work on non-Takahashi Newtonians?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTakahashi designs it around its own Epsilon-series secondary mirror geometry.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA crosshair-equipped alignment tube matched to Takahashi's Epsilon astrographs, threading to the Collimating Eyepiece for a complete Cheshire-style secondary mirror check.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047078645871,"sku":"TAK-TKA00442","price":91.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/tce0030_2_2.jpg?v=1786912929"},{"product_id":"takahashi-collimating-telescope-refractors-cassegrains-ritchey-chretiens","title":"Takahashi Collimating Telescope for Refractors, Cassegrains \u0026 Ritchey-Chretiens","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Takahashi Collimating Telescope is a 6x18mm sighting scope built for aligning refractor, Ritchey-Chrétien and classical Cassegrain optics, including Takahashi's own Mewlon-250CRS, Mewlon-300CRS and CCA-250. It threads directly into the focuser on an M36.4 x 1 male thread and uses a 45-degree angled eyepiece for a comfortable viewing position while sighting down the optical axis. At 210 mm long, 40 mm in diameter and 235 g, it comes with a four-page instruction manual.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you own a Takahashi Mewlon Dall-Kirkham telescope, a CCA-250, or a refractor with a focal length of 820 mm or longer, and you check collimation as part of your setup routine.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6x18mm sighting optics:\u003c\/strong\u003e a magnified, focused view down the optical axis for precise alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45-degree angled eyepiece:\u003c\/strong\u003e keeps the viewing position comfortable regardless of where the focuser points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM36.4 x 1 male thread:\u003c\/strong\u003e threads directly into the focuser drawtube, the same interface as the Collimating Eyepiece and Collimating Tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual focus:\u003c\/strong\u003e extend or retract the eyepiece to bring the sighting image into focus.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUnlike the Collimating Eyepiece, this is a true 6x18mm achromatic sighting telescope rather than a bare peephole. You focus it by extending and retracting the eyepiece tube by hand, and the 45-degree mirror redirects the view for a comfortable angle regardless of where the telescope is pointed. The magnified image makes fine centering errors easier to see than a direct sighting tool would.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/TKA00443-schema.png?v=1786912644\" alt=\"Takahashi TKA00443 collimating telescope dimensional schematic\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eCollimating Mewlon-180C, Mewlon-210, Mewlon-250CRS and Mewlon-300CRS Dall-Kirkham telescopes; centering the secondary mirror on the CCA-250; checking objective alignment on refractors of 820 mm focal length or longer.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThreads via M36.4 x 1 male into any focuser accepting that thread, matching the interface used by Takahashi's Collimating Eyepiece and Collimating Tube. Also compatible with GSO, PlaneWave and RCOS Cassegrain and Ritchey-Chrétien tubes that have a marked secondary mirror for collimation reference.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIt isn't built for relay-lens Cassegrains.\u003c\/strong\u003e Takahashi doesn't recommend it on Cassegrain designs that use a relay lens as part of the optical path.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThird-party RCs need a marked secondary to use it.\u003c\/strong\u003e On GSO, PlaneWave and RCOS tubes that means a secondary mirror with a collimation mark; if you're not sure your tube has one, send us the model and we'll help you check.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it threads into the focuser exactly like an eyepiece, and focus is a simple extend-and-retract adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAligning the optical axis on Takahashi Mewlon Dall-Kirkham telescopes, the CCA-250, and refractors of 820 mm focal length or longer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work on Cassegrains generally?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOn classical Cassegrain and Ritchey-Chrétien designs with a marked secondary, yes; not on designs that use a relay lens.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe collimating telescope and a four-page instruction manual.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eA 6x18mm sighting scope for aligning Takahashi Mewlon, CCA-250 and long-focal-length refractor optics, threading directly into the focuser and focusing by hand.\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":54047079366767,"sku":"TAK-TKA00443","price":353.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/takahashi_collimating_scope_2_2.jpg?v=1786912971"},{"product_id":"farpoint-650nm-laser-collimator-combo-barrel","title":"Farpoint 650nm Laser Collimator — 1.25\"\/2\" Combo Barrel","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Farpoint 650nm Laser Collimator is the fast first step in collimating a Newtonian or Dobsonian reflector: it sets the focuser axis and brings the secondary into position in seconds, then gives the primary a quick check. This version uses a combo stepped barrel, so it seats in a 1.25″ drawtube or a 2″ one without an adapter.\u003c\/p\u003e\n\u003cp\u003eThe body is machined from a single piece of aluminum in one machining step, and the 650 nm diode is held by an eight-screw alignment system. Farpoint manufactures it in the USA and backs the alignment for the life of the tool. It weighs 1.563 lb and ships with a mirror center-marking template, triangle center spots, and a foam-fitted carrying case.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you own a Newtonian or Dobsonian reflector — a solid-tube Dob, a truss or collapsible Dob, or a Newtonian astrograph on an equatorial mount — and you want a collimation check that takes seconds rather than minutes. It suits a visual observer setting up at a dark site, where the illuminated return spot reads clearly without a flashlight, and it suits an imager who wants the focuser axis squared before a session of long exposures. The combo barrel makes it a sensible single purchase if you own more than one reflector with different focuser sizes.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.76 mm (30\/1000″) beam aperture:\u003c\/strong\u003e the smallest Farpoint publishes for any collimator on the amateur market. A narrower beam speckles less and puts a tighter spot on the center mark, so the reading is easier to judge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight-screw alignment system:\u003c\/strong\u003e two sets of directly opposing screws lock both ends of the laser diode, rather than the three-screw arrangement common in less expensive collimators. Holding the diode at both ends is what keeps the beam on the barrel axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-piece machined body:\u003c\/strong\u003e the barrel and the diode housing are cut in one machining step from one piece of aluminum, which keeps them concentric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″\/2″ combo stepped barrel:\u003c\/strong\u003e one tool covers both standard focuser drawtube sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtected switch:\u003c\/strong\u003e positive action, shielded by an aluminum ring, so it is not switched on by a bump in a case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed anodized aluminum finish:\u003c\/strong\u003e a durable surface that stays legible under a red observing light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime alignment guarantee:\u003c\/strong\u003e Farpoint warrants the laser's alignment for the life of the tool.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA laser collimator is only as accurate as the relationship between its beam and its barrel. If the beam leaves at an angle to the barrel axis, every adjustment it suggests is wrong by that angle — and the error is invisible, because the tool looks like it is working. Farpoint addresses this at two points. Machining the barrel and diode housing from a single aluminum blank in one step removes the stacked tolerances you get when a barrel is pressed or threaded into a separate body. The eight-screw arrangement then constrains the diode at both ends with directly opposing pairs, so it is clamped rather than pushed against a spring or a single bearing face, and it stays put when the tool is handled or dropped into a case.\u003c\/p\u003e\n\u003cp\u003eThe 0.76 mm beam aperture works on the same principle from the other direction. Laser light scattered off a mirror surface produces speckle, and a wider beam produces a larger, noisier return patch that is harder to center against the mark. Narrowing the aperture tightens the returned spot, which is what makes a small residual error visible instead of lost in the glare.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary mirror alignment:\u003c\/strong\u003e the primary job. The beam shows immediately whether the secondary is centred under the focuser and tilted correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRough primary alignment:\u003c\/strong\u003e gets the primary close before a Cheshire or autocollimator refines it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField checks in the dark:\u003c\/strong\u003e the illuminated return reads without a white light, so a check between targets does not cost you dark adaptation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter transport:\u003c\/strong\u003e a collapsible or truss Dob that has just been reassembled, or any reflector that travelled in a car, is worth checking before the first target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-imaging setup:\u003c\/strong\u003e squaring the focuser axis before an imaging run, where coma and elongated stars in the corners follow directly from a misaligned secondary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser fit:\u003c\/strong\u003e the stepped combo barrel seats in either a 1.25″ or a 2″ focuser drawtube. No adapter is needed for either.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope types:\u003c\/strong\u003e Newtonian and Dobsonian reflectors. Refractors, SCTs, Maksutovs and other catadioptric designs use different collimation methods and different tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror center mark required:\u003c\/strong\u003e a laser collimator aligns to a mark on the primary. The supplied acetate template and triangle spots cover mirrors up to 12.5″.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirrors over 12.5″:\u003c\/strong\u003e the LARGE center-marking template covers 12″ to 26″ and is sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with a Cheshire:\u003c\/strong\u003e a laser sets the secondary and gets the primary close; a Cheshire finishes the primary using reflected light. The Farpoint collimation kits bundle both.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTell us the make and model of your scope and we’ll check the focuser fit for you.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReflectors only.\u003c\/strong\u003e This is built for Newtonian and Dobsonian optics. If you have a refractor, SCT or Maksutov, get in touch and we will point you at the right tool for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYour primary needs a center mark.\u003c\/strong\u003e The template and spots to do it are in the box, and marking a mirror is a one-time job that takes a few minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe template in the box fits mirrors up to 12.5″.\u003c\/strong\u003e Larger mirrors take the LARGE template, which we also stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA laser gets you most of the way, not all of it.\u003c\/strong\u003e For the last of the primary alignment, a Cheshire reads more precisely — which is why Farpoint sells the two together as a kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is a laser.\u003c\/strong\u003e The beam is bright by design; the usual care around not looking into it or pointing it at anyone applies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt weighs 1.563 lb\u003c\/strong\u003e in its case, so it adds little to a packed eyepiece box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. It drops into the focuser like an eyepiece, and the switch turns it on. The one preparatory step is marking the centre of your primary mirror, and the template and spots for that are supplied — you do it once and the mark stays for the life of the mirror.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich barrel size do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis one covers both. The stepped combo barrel seats in a 1.25″ drawtube or a 2″ drawtube, so it fits whichever focuser your reflector has — and both, if you own two scopes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 0.76 mm beam aperture actually change?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt tightens the spot that comes back off the mirror. A wider beam returns a larger, speckled patch that is harder to judge against the centre mark; a narrower one returns a smaller spot, so a small residual misalignment is visible rather than lost in the glare.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a Cheshire?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor a quick check before a visual session, the laser on its own is usually enough. For the tightest primary alignment — and for imaging, where the corners show every error — a Cheshire reads more precisely. The Farpoint 2″ and 1.25″ collimation kits pair a laser with a matching Cheshire in one case.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work on my SCT or refractor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo — those designs collimate differently. Send us your make and model and we will tell you what the right tool is.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does it differ from a cheaper laser collimator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThree things: the single-piece machined body, the eight-screw diode mount that holds both ends of the diode, and the 0.76 mm beam aperture. All three exist to keep the beam on the barrel axis and to make the return spot readable. Farpoint backs the result with a lifetime alignment guarantee.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a USA-made 650 nm laser collimator with a 1.25″\/2″ combo barrel, a single-piece machined body and an eight-screw diode mount, for Newtonian and Dobsonian reflectors. It needs a centre-marked primary — the template is in the box — and it pairs with a Cheshire when you want the primary finished to the last fraction.\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Default Title","offer_id":54271558680687,"sku":"FP210","price":355.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Product-Shot-5.jpg?v=1789136427"},{"product_id":"farpoint-650nm-laser-collimator-1-25-inch","title":"Farpoint 650nm Laser Collimator — 1.25\" Barrel","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Farpoint 650 nm Laser Collimator with a 1.25″ barrel covers the first step of Newtonian collimation: aligning the secondary mirror, then checking the primary quickly. It is built for Newtonian and Dobsonian reflectors with standard 1.25″ focuser drawtubes.\u003c\/p\u003e\n\u003cp\u003eEvery body is machined from a single piece of aluminum in one machining step, so the barrel and the laser axis stay concentric. An eight-screw alignment system locks both ends of the 650 nm diode with two sets of directly opposing screws. Farpoint machines the tool in the USA and backs it with a lifetime alignment guarantee. A mirror centre-marking template, triangle centre spots and a carrying case are supplied.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if your reflector has a 1.25″ focuser — common on smaller Newtonians, tabletop Dobsonians and many imported reflectors — and you want collimation to be a short check rather than a project. It suits visual observing, where alignment gets confirmed at the eyepiece before the first target, and imaging, where the focuser axis is worth squaring before a run of long exposures. If your reflector has a 2″ focuser, or you own one of each, Farpoint's 1.25″\/2″ combo-barrel model covers both in one tool.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.76 mm (30\/1000″) beam aperture:\u003c\/strong\u003e the smallest aperture Farpoint publishes for any collimator on the amateur astronomy market, giving less speckling and a tighter return spot to read against the centre mark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight-screw alignment system:\u003c\/strong\u003e two sets of directly opposing screws hold both ends of the laser diode, rather than the three-screw arrangement used in cheaper designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-piece machined body:\u003c\/strong\u003e barrel and diode housing cut from one aluminum blank in a single machining step, which keeps them concentric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ stepped barrel:\u003c\/strong\u003e seats in standard 1.25″ focuser drawtubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-bright 650 nm red laser:\u003c\/strong\u003e readable at the focuser and on the primary in all conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtected switch:\u003c\/strong\u003e positive action, shielded by an aluminum ring against accidental activation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed anodized aluminum body:\u003c\/strong\u003e rugged, and chosen for visibility of the return beam's position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime alignment guarantee:\u003c\/strong\u003e Farpoint warrants the laser's alignment for the life of the tool.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eMechanical and Optical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA laser collimator's accuracy comes down to one relationship: the angle between the beam and the barrel that holds it. Where the two disagree, every adjustment the tool indicates is wrong by that angle, and nothing in the tool's behaviour reveals it. Farpoint constrains this at both ends. Machining the barrel and the diode housing from one piece of aluminum in a single step removes the tolerance stack that comes with a barrel pressed or threaded into a separate body. The eight-screw mount then clamps the diode at both ends with directly opposing pairs, holding it in compression rather than against a spring or a single face, which is what keeps alignment through handling and transport.\u003c\/p\u003e\n\u003cp\u003eThe 0.76 mm aperture addresses the reading rather than the alignment. Laser light scattered from a mirror produces speckle, and a wide beam returns a large, noisy patch that is hard to centre against a mark. Narrowing the aperture to 0.76 mm tightens the returned spot, so a small residual error stays visible.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary mirror alignment:\u003c\/strong\u003e the main task. The beam shows at once whether the secondary sits centred under the focuser and at the right tilt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick primary check:\u003c\/strong\u003e brings the primary approximately into place before a Cheshire refines it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDark-site checks:\u003c\/strong\u003e the return reads by its own light, so a mid-session check costs no dark adaptation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter transport:\u003c\/strong\u003e a tabletop Dobsonian or a Newtonian just out of a car reads in seconds before the first target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBefore an imaging run:\u003c\/strong\u003e misalignment shows up in the corners of a long exposure as coma and elongated stars.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser fit:\u003c\/strong\u003e 1.25″ stepped barrel, for standard 1.25″ focuser drawtubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ focusers:\u003c\/strong\u003e this barrel seats in 1.25″ drawtubes only. Farpoint's 1.25″\/2″ combo-barrel collimator covers both sizes, and we stock it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope types:\u003c\/strong\u003e Newtonian and Dobsonian reflectors. Refractors, catadioptric and SCT designs collimate by other means.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary mirror centre mark:\u003c\/strong\u003e the laser aligns to a mark on the primary. The supplied acetate template and triangle centre spots cover mirrors up to 12.5″.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirrors over 12.5″:\u003c\/strong\u003e the Farpoint LARGE centre-marking template covers 12″ to 26″ and is sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with a Cheshire:\u003c\/strong\u003e the Farpoint 1.25″ Collimation Kit bundles this laser with a matching 1.25″ Cheshire, the centre-marking template and a fitted case.\u003c\/li\u003e\n\u003cli\u003eTell us your scope and we will confirm the fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt is built for reflectors.\u003c\/strong\u003e Farpoint designs this collimator for Newtonian and Dobsonian optics. For a refractor, SCT or Maksutov, tell us what you have and we will point you at the right tool.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is the 1.25″ barrel version.\u003c\/strong\u003e A 2″ drawtube takes the combo-barrel model instead, which steps to fit either size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe primary mirror needs a centre mark for the laser to align to.\u003c\/strong\u003e The template and triangle spots are in the box, and marking a mirror is a one-time job that lasts the life of the coating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe supplied template covers mirrors up to 12.5″.\u003c\/strong\u003e Larger mirrors take the LARGE template, which we also stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA laser brings the primary close and a Cheshire finishes it.\u003c\/strong\u003e For visual work the laser alone is generally enough; for imaging, the two together read more precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 650 nm beam is bright by design.\u003c\/strong\u003e It is meant to be read off the mirror and off the focuser face rather than viewed directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. It drops into the focuser like an eyepiece and switches on. The one preparatory step is marking the centre of the primary mirror, and the template and spots for that are supplied — done once, the mark lasts the life of the mirror.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit my telescope?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf your reflector has a 1.25″ focuser drawtube, yes. A 2″ drawtube takes the combo-barrel version, which steps to fit either. Send us the make and model and we will check which one suits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 0.76 mm beam aperture change in practice?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt tightens the spot that returns off the mirror. A wider beam comes back as a larger, speckled patch that is harder to judge against the centre mark; at 0.76 mm the return is a small spot, so a slight misalignment stays visible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a Cheshire as well?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor a check before visual observing, the laser on its own does the job. For the last of the primary alignment — and for imaging, where the frame corners show every error — a Cheshire reads more precisely. Farpoint's 1.25″ Collimation Kit pairs this laser with one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat separates it from an inexpensive laser collimator?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe single-piece machined body, the eight-screw diode mount holding both ends, and the 0.76 mm aperture. Each exists to keep the beam true to the barrel and the return spot readable, and Farpoint backs the result with a lifetime alignment guarantee.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used on an SCT or a refractor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThose designs collimate by other methods, so this tool has no role there. Tell us what you have and we will point you at the right one.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a USA-made 650 nm laser collimator with a 1.25″ barrel, a single-piece machined body, an eight-screw diode mount and a 0.76 mm beam aperture, for Newtonian and Dobsonian reflectors with 1.25″ focusers. The centre-marking template is supplied, and it pairs with a Cheshire when you want the primary finished precisely.\u003c\/p\u003e","brand":"Farpoint","offers":[{"title":"Default Title","offer_id":54271559434351,"sku":"FP211","price":243.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ProductShotFP211.jpg?v=1789136491"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/collections\/img_6604__65279_category.jpg?v=1767587538","url":"https:\/\/ontariotelescope.com\/collections\/telescope-collimation.oembed?page=2","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}