{"product_id":"starizona-variable-m42-t2-t-threaded-adapter-30-40mm","title":"Starizona Variable M42 (T2) Adapter 30-40mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdjustable Length: 30mm to 40mm\u003c\/li\u003e\n\u003cli\u003eThread Type: M42 (T2) T-Thread\u003c\/li\u003e\n\u003cli\u003eProvides Continuous Spacing Adjustment\u003c\/li\u003e\n\u003cli\u003eSimplifies Achieving Precise Back Focus\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\u003eIn the Box\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 30-40mm\u003c\/h2\u003e\n\u003cp\u003eThe Starizona Variable M42 (T2) T-Threaded Adapter provides precise, adjustable spacing from 30mm to 40mm for any optical train using standard M42 T-threads. This single component replaces a collection of fixed-length spacers, allowing you to dial in the exact back focus required by your camera and corrector combination within its adjustment range.\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\u003eFine-Tuning Back Focus from 30mm to 40mm\u003c\/h3\u003e\n\u003cp\u003eAchieving the correct back focus is critical for sharp stars corner-to-corner, especially with field flatteners and coma correctors. The Starizona Variable T-Threaded Adapter simplifies this process by offering a continuous adjustment range from 30mm to 40mm. Instead of swapping out multiple fixed spacers, you can simply rotate the adapter to lengthen or shorten the optical path, letting you find the perfect spacing with sub-millimeter precision. This is essential for optimizing imaging systems where the exact distance between the corrector and sensor is non-negotiable.\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 T-Threaded Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis model of the Starizona Variable T-Threaded Adapter has a continuous adjustment range from \u003cstrong\u003e30mm to 40mm\u003c\/strong\u003e in length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat thread type does this Starizona adapter use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter uses standard \u003cstrong\u003eM42 (T2) T-threads\u003c\/strong\u003e on both male and female ends, ensuring compatibility with most astronomy cameras, filter wheels, and correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre other adjustment ranges available for the Starizona Variable Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. In addition to this 30-40mm version, Starizona also offers adapters with 15-20mm and 20-30mm ranges, as well as a kit that includes all three variable adapters.\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 Type\u003c\/td\u003e\n\u003ctd\u003eM42 (T2) T-Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable Length\u003c\/td\u003e\n\u003ctd\u003e30mm - 40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eStarizona Variable M42 (T2) T-Threaded Adapter 30-40mm\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\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":68044996968733,"sku":"STZ-VAR-M42-LONG","price":63.0,"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_faeda5bf-36f2-4a9f-a593-4b4423c108e4.jpg?v=1794410529","url":"https:\/\/davidastro.com\/products\/starizona-variable-m42-t2-t-threaded-adapter-30-40mm","provider":"David Astro","version":"1.0","type":"link"}