{"title":"Collimation Tools for Telescopes","description":"\u003cp\u003eBrowse our Collimation Tools for Telescopes collection. Free Shipping.\u003c\/p\u003e","products":[{"product_id":"bobs-knobs-for-skywatcher-celestron-newtonian-primary-swpri","title":"Bob's Knobs for SkyWatcher \u0026 Celestron Newtonian Primary (SWpri)","description":"\u003ch2\u003eBob's Knobs for SkyWatcher \u0026amp; Celestron Newtonian Primary\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFits\u003c\/strong\u003e: SkyWatcher Newtonian telescopes with factory collimation screws.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePrimary collimation\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKnobs: Black plastic, 16 mm (5\/8”) diameter\u003c\/li\u003e\n\u003cli\u003eThreads: Stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Lock\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKnobs: Red plastic, 16 mm (5\/8”) diameter\u003c\/li\u003e\n\u003cli\u003eThreads: Stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e:\u003cbr data-mce-fragment=\"1\"\u003eOur knobs will fit only a primary with factory collimation screws. If your telescope already has factory collimation knobs (see Item B below) our knobs will not fit.\u003cbr data-mce-fragment=\"1\"\u003eThe telescope optical tube assembly will clear the Dobsonian rocker box with primary knobs installed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr data-mce-fragment=\"1\"\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.\u003cbr data-mce-fragment=\"1\"\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\/p\u003e\n\u003cp\u003e\u003cbr data-mce-fragment=\"1\"\u003eProtect the locking knobs from damage, and do not support the OTA using the locking knobs as feet.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSome SkyWatcher models are equipped with factory collimation and lock knobs. Our knobs will not fit these telescopes. Although the lock knob is small, its proximity to the collimation knob prevents replacing it with a larger knob. Furthermore, the primary adjustment knob is of a different design than our replacement knobs.\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Bob's Knobs","offers":[{"title":"Default Title","offer_id":48411414102274,"sku":"igl1787937542976","price":21.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3332\/0450\/files\/bobs-knobs-for-skywatcher-celestron-newtonian-primary-swpri_1.webp?v=1787937545"},{"product_id":"takahashi-collimating-scope-tka00443","title":"Takahashi Collimating scope (TKA00443)","description":"\u003ch2\u003eTakahashi Collimating scope\u003c\/h2\u003e\n\u003cdiv class=\"shopify-section\" id=\"shopify-section-template--16185084641509__description\"\u003e\n\u003csection class=\"container clearfix loaded ignore\" data-carousel-type=\"section\" data-url=\"\/\/takahashiamerica.com\/cdn\/shop\/t\/3\/assets\/script.tabbed.js?v=83467205078527531921656105673\" data-section-type=\"tabbed\" data-section-id=\"template--16185084641509__description\"\u003e\n\u003cdiv class=\"nine center text-left bottompad clearfix\"\u003e\n\u003cdiv aria-labelledby=\"tab-description\" role=\"tabpanel\" class=\"product-desc tab-body tab-body-content tab-body-id-template--16185084641509__description\" id=\"description\" tabindex=\"0\"\u003e\n\u003cdiv class=\"tabindex\"\u003e\n\u003cp\u003eThe Takahashi collimating scope is a 6 x 18mm telescope designed for use on refractor, Ritchey-Chretien and classical Cassegrain telescopes and also used on the Takahashi CN-212, Mewlons and refractors of 820mm or more in focal length.\u003c\/p\u003e\n\u003cp\u003eCannot be used on a Cassegrain instrument that employs a relay lens as part of it optical system. At the top of the scope, a focusing eyepiece is moved in or out manually to focus on the internal components. At the front of the Takahashi collimating telescope is a mirror threaded ahead of the objective lens.\u003c\/p\u003e\n\u003cp\u003eThis provides a peep hole in the center the scope looks through. The reflective side of the mirror faces the scope you are collimating at a 45° angle to the scope's light path and is illuminated by an opaque opening in the side of the Takahashi collimating telescope.\u003c\/p\u003e\n\u003cp\u003eThe Takahashi collimating telescope threads into the focuser and gives a round, white target to align the optics. Because it is threaded into the telescope being collimated, it's always precisely aligned. The Takahashi collimating telescope naturally provides a four-page instruction manual with multiple illustrations for use.\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTakahashi Collimating scope (TKA00443)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"shopify-section\" id=\"shopify-section-template--16185084641509__description\"\u003e\n\u003csection class=\"container clearfix loaded ignore\" data-carousel-type=\"section\" data-url=\"\/\/takahashiamerica.com\/cdn\/shop\/t\/3\/assets\/script.tabbed.js?v=83467205078527531921656105673\" data-section-type=\"tabbed\" data-section-id=\"template--16185084641509__description\"\u003e\n\u003cdiv class=\"nine center text-left bottompad clearfix\"\u003e\n\u003cdiv aria-labelledby=\"tab-description\" role=\"tabpanel\" class=\"product-desc tab-body tab-body-content tab-body-id-template--16185084641509__description\" id=\"description\" tabindex=\"0\"\u003e\n\u003cdiv class=\"tabindex\"\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eTakahashi 5-Years Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":48411422392578,"sku":"ilq1787937549035","price":165.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3332\/0450\/files\/takahashi-collimating-scope-tka00443_1.jpg?v=1787937554"},{"product_id":"takahashi-125-collimating-eyepiece-tka00441","title":"Takahashi 1.25\" Collimating eyepiece (TKA00441)","description":"\u003ch2\u003eTakahashi 1.25\" Collimating eyepiece \u003c\/h2\u003e\n\u003ch4 class=\"intro\"\u003eThe best tool for collimating your Newtonian telescope\u003c\/h4\u003e\n\u003cp\u003eThe collimation is an essential step to obtain optimal images with a telescope. It consists of adjusting the primary and secondary mirrors so that they are aligned as precisely as possible. The goal is that all the light coming from the stars is perfectly concentrated at the focus of the telescope.\u003c\/p\u003e\n\u003cp\u003eA collimating eyepiece is a small accessory that is inserted on the eyepiece holder of the telescope. Without a lens, it just allows you to place your eye exactly on the optical axis of the instrument; a very small hole is drilled in the center of the eyepiece for this purpose. Thanks to the reflections of the different optical surfaces on each other, it becomes very easy to align the mirrors geometrically. A side opening brings light to a reflective metal surface that acts as a central marker for adjustments. The procedure is performed mainly during the day or at dusk; at night, it will be necessary to illuminate the entrance of the instrument and\/or the metalized surface.\u003c\/p\u003e\n\u003cp\u003eAlthough intimidating at first for the beginner, the procedure is simple and safe and greatly optimizes observations.\u003c\/p\u003e\n\u003cp\u003eThe collimation eyepiece is the main tool for the adjustment of the mirrors of the Newtonian telescopes, whether they are on equatorial mount or on Dobson mount. It is also very useful for the adjustment of the secondary mirror of Cassegrain or Ritchey-Chrétien telescopes.\u003c\/p\u003e\n\u003cp\u003eThe Takahashi model is machined from aluminum and made in Japan. \u003c\/p\u003e\n\u003cdiv class=\"shopify-section\" id=\"shopify-section-template--16185084641509__description\"\u003e\n\u003csection class=\"container clearfix loaded ignore\" data-carousel-type=\"section\" data-url=\"\/\/takahashiamerica.com\/cdn\/shop\/t\/3\/assets\/script.tabbed.js?v=83467205078527531921656105673\" data-section-type=\"tabbed\" data-section-id=\"template--16185084641509__description\"\u003e\n\u003cdiv class=\"nine center text-left bottompad clearfix\"\u003e\n\u003cdiv aria-labelledby=\"tab-description\" role=\"tabpanel\" class=\"product-desc tab-body tab-body-content tab-body-id-template--16185084641509__description\" id=\"description\" tabindex=\"0\"\u003e\n\u003cdiv class=\"tabindex\"\u003e\n\u003cp\u003eThis Takahashi 1.25 in eyepiece works with Newtonian or Cassegrain telescopes as a collimating tool. (collimating tube sold separately) \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eCHARACTERISTIC\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003eTAKAHASHI COLLIMATING EYEPIECE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eItem number\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003eTATKA00441\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eInput mechanical interface\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e1.25\" (31.75 mm) male barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eOutput mechanical interface\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e45 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTakahashi Collimating eyepiece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eTakahashi 5-Years Warranty\u003c\/p\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":48411422425346,"sku":"fpp1787937549277","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3332\/0450\/files\/takahashi-125-collimating-eyepiece-tka00441_1.jpg?v=1787937553"},{"product_id":"takahashi-collimating-tube-with-crosshair-for-newtonian-tka00442","title":"Takahashi Collimating tube with crosshair for Newtonian (TKA00442)","description":"\u003ch2\u003eTakahashi Collimating tube with crosshair for Newtonian \u003c\/h2\u003e\n\u003cdiv id=\"shopify-section-template--16185084641509__description\" class=\"shopify-section\"\u003e\n\u003csection data-section-id=\"template--16185084641509__description\" data-section-type=\"tabbed\" data-url=\"\/\/takahashiamerica.com\/cdn\/shop\/t\/3\/assets\/script.tabbed.js?v=83467205078527531921656105673\" data-carousel-type=\"section\" class=\"container clearfix loaded ignore\"\u003e\n\u003cdiv class=\"nine center text-left bottompad clearfix\"\u003e\n\u003cdiv id=\"description\" class=\"product-desc tab-body tab-body-content tab-body-id-template--16185084641509__description\" role=\"tabpanel\" aria-labelledby=\"tab-description\" tabindex=\"0\" data-mce-tabindex=\"0\"\u003e\n\u003cdiv class=\"tabindex\"\u003e\n\u003cp\u003eThis Takahashi tube with crosshairs works with Newtonian or Cassegrain telescopes as a collimating tool. (collimating eyepiece sold separately) \u003c\/p\u003e\n\u003cp\u003eTakahashi adjustment tube for the Epsilon devices, it is connected to the TKP00103 adapter (Coupling S) on the telescope side via the M36.4 thread. The second part, the adjustment eyepiece TKA00441, is clamped at the back of the 1.25\" eyepiece holder, in combination of these two parts you have an accurate Cheshire eyepiece. The system charts can be found below.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTakahashi Collimating tube with crosshair for Newtonian\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eTakahashi 5-Years Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":48411423342850,"sku":"elq1787937550306","price":52.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3332\/0450\/files\/takahashi-collimating-tube-with-crosshair-for-newtonian-tka00442_1.jpg?v=1787937554"},{"product_id":"bobs-knobs-for-celestron-6-sct","title":"Bob's Knobs for Celestron 6” SCT","description":"\u003ch2\u003eBob's Knobs for Celestron 6” SCT \u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe knobs below will fit almost all versions of the Celestron 6” Schmidt-Cassegrain secondary. Price is for a complete set of knobs.\u003cbr\u003e\u003cbr\u003eIMPORTANT NOTE: \u003c\/span\u003e\u003cspan style=\"font: 14px Arial, Verdana, Helvetica, sans-serif;\"\u003eSecondary collimation screws have threads (measured below the screw head) that are either 10 mm or 12 mm long. We include a set of white spacers to be used on the knobs if factory threads are 10 mm long. \u003c\/span\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font: 14px Arial, Verdana, Helvetica, sans-serif;\"\u003eDo NOT use the white spacers if the factory screw threads are 12 mm long\u003c\/span\u003e\u003cspan style=\"font: 14px Arial, Verdana, Helvetica, sans-serif;\"\u003e.\u003c\/span\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 15px; font-weight: bold;\"\u003eA. Knobs for C6 f\/10 Secondary with Metric Collimation Screw Threads\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e Celestron 6” (15 cm) f\/10 SCT versions (C6-A-XLT, C6-GT, C6-S, C6-SE, C6-SGT, others)\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eKnobs:\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e Black oxide steel (black) , 12 mm (1\/2”) diameter\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif; font-weight: bold;\"\u003eThreads:\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e Black oxide \u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif; color: #000000;\"\u003eAll versions of the Celestron C6 SCT have collimation screws with metric threads.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003eSecondary collimation screws have threads (measured below the screw head) that are either 10 mm or 12 mm long. We include a set of white spacers to be used on the knobs if factory threads are 10 mm long. \u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003eDo NOT use the white spacers if the factory screw threads are 12 mm long\u003c\/span\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif;\"\u003e.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif; color: #000000;\"\u003eBlack oxide steel (shown in photo) is for dry environments. Lightly oil the knob top and knob serrations periodically as an anti-corrosion measure. Stainless steel provides better corrosion protection in coastal or high humidity areas, or in places where dew or other condensation is common. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font: 12px Arial, Verdana, Helvetica, sans-serif; color: #000000;\"\u003eThe factory dust cover will usually fit properly with Bob’s Knobs installed, except on some very early versions.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eBob's Knobs for Celestron 6” SCT Black Oxide\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eor\u003c\/p\u003e\n\u003cp\u003eStainless steel\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bob's Knobs","offers":[{"title":"A1. Black Oxide Steel (C6BO)","offer_id":48411439333634,"sku":"dlt1787937548233","price":18.27,"currency_code":"USD","in_stock":true},{"title":"A2. Stainless Steel (C6SS)","offer_id":48411439366402,"sku":"wmq1787937548234","price":17.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3332\/0450\/files\/bobs-knobs-for-celestron-6-sct_1.jpg?v=1787937576"}],"url":"https:\/\/www.plumritual.shop\/collections\/collimation-tools-for-telescopes.oembed","provider":"My Store","version":"1.0","type":"link"}