{"product_id":"starizona-variable-m48-t-threaded-adapter-30-40mm","title":"Starizona Variable M48 Adapter 30-40mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdjustable Length: 30mm to 40mm\u003c\/li\u003e\n\u003cli\u003eThread Size: M48\u003c\/li\u003e\n\u003cli\u003eFine-Tune Critical Back Focus\u003c\/li\u003e\n\u003cli\u003eReplaces Multiple Fixed-Length Spacers\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 M48 T-Threaded Adapter 30-40mm\u003c\/h2\u003e\n\u003cp\u003eThe Starizona Variable M48 T-Threaded Adapter provides a continuous adjustment range from 30mm to 40mm, delivering a precise solution for setting back focus in an astrophotography setup. With standard M48 threads, this single component replaces an entire collection of fixed-length spacers, allowing you to dial in the exact distance your corrector and camera require.\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\u003eAchieving Critical Back Focus from 30mm to 40mm\u003c\/h3\u003e\n\u003cp\u003eSetting the correct distance between a field flattener or reducer and the camera sensor is essential for achieving sharp stars across the entire image. This variable adapter allows for minute adjustments anywhere between 30mm and 40mm. Instead of stacking spacers and hoping for a close-enough result, you can make fine adjustments to perfectly match your optical train's requirements, correcting for field curvature and ensuring optimal performance from your corrector.\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\"\u003eHow can the Starizona Variable M48 Adapter help connect my M48 flattener to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt acts as an adjustable M48-threaded spacer. This allows you to precisely set the critical distance between your flattener and camera sensor, which is necessary for achieving a flat field with sharp stars to the edge. This specific adapter covers any spacing requirement between \u003cstrong\u003e30mm and 40mm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy corrector requires 55mm of back focus, but my camera and filter wheel only use 20mm. Can the Starizona Variable Adapter (30-40mm) help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. In this scenario, you need to add 35mm of spacing (55mm - 20mm = 35mm). This adapter's range of \u003cstrong\u003e30mm to 40mm\u003c\/strong\u003e covers that 35mm requirement perfectly, allowing you to fine-tune the distance for optimal correction.\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 M48 Variable Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, Starizona also offers other versions of this adapter to cover different spacing needs, including a 15-20mm and a 20-30mm model.\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\u003eM48\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 M48 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":68045000933661,"sku":"STZ-VAR-M48-LONG","price":70.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Starizona-Variable-M48-Adapters-1_d7f100d7-3409-4352-abd2-f48d650b7789.jpg?v=1794410536","url":"https:\/\/davidastro.com\/products\/starizona-variable-m48-t-threaded-adapter-30-40mm","provider":"David Astro","version":"1.0","type":"link"}