{"title":"Bob's Knobs","description":"\u003cp\u003eEvery Bob's Knobs item we carry. Part of \u003ca href=\"\/collections\/accessories\"\u003eAccessories\u003c\/a\u003e.\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":"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"}],"url":"https:\/\/ontariotelescope.com\/collections\/bobs-knobs.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}