{"product_id":"prima-luce-lab-onaxislock2-1-25","title":"PRIMA LUCE LAB OnAxisLock2 1.25\"","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003ePrimaLuceLab OnAxisLock2 1.25\" \u003c\/strong\u003eis a double compression ring eyepiece holder which perfectly centres 1.25\" eyepieces and accessories with no flexure, no scratches and \u003cstrong\u003eno off-axis tilt\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhether you are using eyepieces and diagonals for visual observation or precision astrophotography with 1.25\" cameras, the OnAxisLock2 ensures a \u003cstrong\u003eperfectly centred \u003c\/strong\u003eoptical axis. Simply insert the OnAxisLock2 into a 2\" drawtube, then rotate the outer ring clockwise to secure your gear in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy a locking ring matters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen you insert a heavy camera, a filter wheel, or a large mirror diagonal into a focuser, the weakest point in the optical chain is often the accessory clamp. A traditional set screw applies all clamping force to a single contact point on the barrel. Under load, this causes micro-flexures that shift the focal plane and tilt the sensor relative to the optical axis. It also leaves pressure marks and scratches on expensive accessories.\u003c\/p\u003e\n\u003cp\u003eThe OnAxisLock2 solves this with a double compression ring mechanism. A single manual rotation of the outer ring simultaneously tightens two internal rings that grip the inserted barrel with uniform, 360° pressure. The accessory is held firmly against any tilting movement, perfectly centered on the optical axis of the telescope.\u003c\/p\u003e\n\u003cp\u003eThe OnAxisLock2 1.25\" fits any standard \u003cstrong\u003e2\" \/ 50.8mm barrel\u003c\/strong\u003e, as found on many focusers. The outer ring has been designed with a deeply \u003cstrong\u003eknurled grip \u003c\/strong\u003ethat allows you to lock and unlock accessories with fingertip pressure. You do not need tools - you can operate it comfortably even when wearing gloves in cold conditions, and the tactile feedback of the ring lets you confirm the lock position without looking.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/PL8410100_2_1000.jpg?v=1782699239\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"specificationTable\" style=\"width: 100.06%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; width: 59.9639%;\"\u003eOptical length\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 39.7351%;\"\u003e19 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; width: 59.9639%;\"\u003eClear aperture\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd style=\"width: 39.7351%;\"\u003e31.8 mm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; width: 59.9639%;\"\u003eConnection telescope side\u003c\/th\u003e\n\u003ctd style=\"width: 39.7351%;\"\u003e2\" nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; width: 59.9639%;\"\u003eConnection eyepiece side\u003c\/th\u003e\n\u003ctd style=\"width: 39.7351%;\"\u003e1.25\" barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; width: 59.9639%;\"\u003eSKU\u003c\/th\u003e\n\u003ctd style=\"width: 39.7351%;\"\u003e\u003cspan itemprop=\"sku\"\u003ePL8410100\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Testar Australia","offers":[{"title":"Default Title","offer_id":48600306286817,"sku":"PL8410100","price":110.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/PL8410100_1_1000.jpg?v=1782699227","url":"https:\/\/www.testar.com.au\/products\/prima-luce-lab-onaxislock2-1-25","provider":"Testar Australia","version":"1.0","type":"link"}