{"product_id":"shelyak-pu0019","title":"Shelyak T-mount front part for the Lhires III","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReplaces the standard Lhires III front panel\u003c\/li\u003e\n\u003cli\u003eProvides a female M42x0.75mm T-mount thread\u003c\/li\u003e\n\u003cli\u003eEnables direct connection to custom optical trains\u003c\/li\u003e\n\u003cli\u003eInstalls with the original 8 screws\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\u003eT-mount front part for the Lhires III\u003c\/h2\u003e\n\u003cp\u003eThe Shelyak T-mount Front Part for the Lhires III converts the spectroscope's input to a standard female M42x0.75mm thread for direct connection to custom optical trains. Installation replaces the stock panel via 8 screws, creating a secure interface when the default Schmidt-Cassegrain adapter or 2-inch nosepiece is unsuitable for your setup.\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\u003eLhires III T-Mount Adapter: M42x0.75mm Female Thread for Custom Setups\u003c\/h3\u003e\n\u003cp\u003eThis T-mount adapter is the dedicated solution for integrating the Lhires III spectroscope into imaging setups that cannot use the standard Schmidt-Cassegrain adapter or a 2-inch nosepiece. It creates a direct, threaded M42x0.75mm connection point, eliminating potential flexure from slip-fit adapters and ensuring rigid collimation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Threaded Connection:\u003c\/strong\u003e Provides a secure M42x0.75mm female T-thread for direct attachment to off-axis guiders, filter wheels, or custom camera spacers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces Stock Panel:\u003c\/strong\u003e The part is a complete replacement for the original Lhires III front panel, installed by removing the existing 8 screws for a rigid, factory-fit integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternative to Standard Adapters:\u003c\/strong\u003e Specifically designed for astronomers whose setups require a T-thread interface instead of the included SCT or 2-inch adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen would I need the T-mount Front Part for my Lhires III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need this part if your telescope, focuser, or camera setup requires a direct M42x0.75mm T-thread connection. It replaces the standard Lhires III front panel to provide this common interface, bypassing the need for the included SCT adapter or 2\" nosepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the T-mount Front Part installed on the Lhires III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. You simply remove the 8 screws holding the standard front panel on your Lhires III spectroscope, take the old panel off, and attach this new T-mount front part using the same 8 screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this T-mount Front Part with my 8\" f\/10 Schmidt-Cassegrain?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can, the standard adapter included with the Lhires III is already designed for Schmidt-Cassegrain telescopes. This T-mount part is intended for situations where the standard SCT adapter does not work, such as when you have an off-axis guider or filter wheel with T-threads in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this part change the back focus of the Lhires III?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis part replaces the front panel and establishes a new, standard M42x0.75mm connection point. You will need to calculate your spacing from this new reference plane to your camera sensor. It is not a simple spacer but a fundamental change to the instrument's input interface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the T-mount Front Part for the Lhires III compatible with ZWO or QHY cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Most dedicated astronomy cameras from brands like ZWO and QHY use M42x0.75mm T-threads as their primary connection standard. This front part allows you to create a direct, rigid, all-threaded connection from your camera and accessories to the Lhires III spectroscope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread specification for this Lhires III T-mount adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter provides a standard female T-mount thread, which is specified as \u003cstrong\u003eM42x0.75mm\u003c\/strong\u003e. This ensures compatibility with the vast majority of T-rings, spacers, and accessories in the astronomy market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eFemale T-Mount (M42x0.75mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eShelyak Lhires III Spectroscope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eReplaces front panel (8 screws)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eT-mount front part for Lhires III\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\/shelyak-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eShelyak 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52943041134877,"sku":"SHK-PU0019","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Shelyak-T-mount-front-part-for-the-Lhires-III-1_e0df2661-9fc7-4d82-849e-e3dc76a1c68d.jpg?v=1789616162","url":"https:\/\/davidastro.com\/en-us\/products\/shelyak-pu0019","provider":"David Astro","version":"1.0","type":"link"}