{"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","url":"https:\/\/www.plumritual.shop\/products\/takahashi-125-collimating-eyepiece-tka00441","provider":"My Store","version":"1.0","type":"link"}