{"product_id":"starizona-variable-m42-t2-t-threaded-adapter-20-30mm","title":"Starizona Variable M42 (T2) Adapter 20-30mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdjustable Length: 20-30mm\u003c\/li\u003e\n\u003cli\u003eThread Type: M42 (T2) T-Thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eStarizona Variable M42 (T2) T-Threaded Adapter 20-30mm\u003c\/h2\u003e\n\u003cp\u003eThe Starizona Variable M42 (T2) T-Threaded Adapter provides a continuous spacing adjustment from 20mm to 30mm for any optical train using the common M42 T-thread standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Variable 20-30mm Spacer for M42 Threads\u003c\/h3\u003e\n\u003cp\u003eAchieving the exact back focus distance required by a field flattener or reducer is critical for sharp stars across the entire image field. The Starizona Variable M42 T-Threaded Adapter simplifies this process by offering a continuous adjustment range between 20mm and 30mm. This single component replaces a collection of fixed-length spacers, allowing you to make fine, incremental changes to find the perfect distance for your specific optical setup. For spacing needs outside the 20-30mm range, Starizona also offers 15-20mm and 30-40mm versions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the adjustment range of the Starizona Variable M42 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis version of the Starizona Variable M42 Adapter has an adjustable length from \u003cstrong\u003e20mm to 30mm\u003c\/strong\u003e. It is designed for optical trains that use standard \u003cstrong\u003eM42 T-threads\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Starizona 20-30mm Adapter help when setting back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eReducers and flatteners require a precise distance to the camera sensor for optimal performance. The Starizona 20-30mm adapter allows you to make fine adjustments to this spacing within its range, helping you dial in the exact distance needed to achieve sharp stars across your field of view without needing a large set of fixed spacers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat threads does the Starizona 20-30mm Variable Adapter use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter uses standard \u003cstrong\u003eM42 T-threads\u003c\/strong\u003e, also known as \u003cstrong\u003eT2 threads\u003c\/strong\u003e, for both its male and female connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM42 (T2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Length\u003c\/td\u003e\n\u003ctd\u003e20-30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/starizona-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarizona Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starizona","offers":[{"title":"Default Title","offer_id":68044996870429,"sku":"STZ-VAR-M42-MEDIUM","price":56.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Starizona-Variable-M42-T-Threaded-Adapters-1_9af50242-ce6e-4359-b56b-4eb4379aa704.jpg?v=1794410529","url":"https:\/\/davidastro.com\/products\/starizona-variable-m42-t2-t-threaded-adapter-20-30mm","provider":"David Astro","version":"1.0","type":"link"}