{"product_id":"prima-luce-lab-onaxislock2-2","title":"PRIMA LUCE LAB OnAxisLock2 2\" FOR ESATTO \/ ARCO 2\"","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003ePrimaLuceLab OnAxisLock2 2\" for ESATTO \u0026amp; ARCO 2\" \u003c\/strong\u003eis a double compression ring eyepiece holder which perfectly centres 2\" 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 heavy cameras, the OnAxisLock2 ensures a \u003cstrong\u003eperfectly centred \u003c\/strong\u003eoptical axis. Simply attach the OnAxisLock2 to the \u003cstrong\u003eM56 x 1 threads \u003c\/strong\u003eas found on the PrimaLuceLab Esatto 2\" electronic focuser or Arco 2\" robotic rotator, 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\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eUnlike the 1.25\" version, the OnAxisLock2 2\" is designed specifically to fit the M56 x 1 threads of the \u003cstrong\u003eEsatto 2\" and Arco 2\"\u003c\/strong\u003e.\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\/PL8410015_2_1000.jpg?v=1782699315\" 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 style=\"width: 100.06%;\" class=\"specificationTable\"\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%;\"\u003e26 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%;\"\u003e50.8 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%;\"\u003eM56 x 1 female\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%;\"\u003e2\" 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\"\u003ePL8410015\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":48600355569889,"sku":"PL8410015","price":105.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/4935\/5059\/files\/PL8410015_1_1000.jpg?v=1782699254","url":"https:\/\/www.testar.com.au\/products\/prima-luce-lab-onaxislock2-2","provider":"Testar Australia","version":"1.0","type":"link"}