{"title":"Étuis et protections Orion Optics UK","description":"\u003cp\u003eLes étuis et protections Orion Optics UK protègent l'optique des télescopes à tube serrurier ou fermé. L'essentiel de la gamme est constitué de jupes pour tubes serruriers de 10\", 12\", 14\", 16\", 18\", 20\" et 24\", qui entourent les barres pour bloquer la lumière parasite, la rosée et les courants d'air devant les miroirs.\u003c\/p\u003e\u003cp\u003eLa collection comprend aussi un bouchon vissant en aluminium anodisé noir pour le Maksutov-Cassegrain OMC140, qui garde la lame correctrice propre entre les sessions.\u003c\/p\u003e","products":[{"product_id":"orion-optics-uk-odk10tr-ms","title":"Orion Optics UK Truss Shroud for 10″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks stray light to increase image contrast\u003c\/li\u003e\n\u003cli\u003eManages internal air currents to stabilize views\u003c\/li\u003e\n\u003cli\u003eFlexible material fits around focusers and accessories\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for 10-inch truss-tube telescopes\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\u003eTruss Shroud for 10″ Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Truss Shroud for 10″ Telescopes is an essential accessory for maximizing image contrast in open-tube Newtonian and Cassegrain designs. This custom-fit cover, made from a specialized black, light-proof material, blocks stray light and stabilizes air currents within the optical path of your 10″ instrument, directly improving views of faint deep-sky objects.\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\u003eMaximize Contrast for Your 10\" Truss Telescope\u003c\/h3\u003e\n\u003cp\u003eAn open truss design is excellent for portability and rapid cooling, but it leaves the optical path vulnerable. Stray light from streetlights, yard lights, or even the Moon can enter the tube and wash out faint nebulosity and galaxy details. This shroud creates a dark optical tunnel, restoring the high-contrast background needed to see the most delicate structures.\u003c\/p\u003e\n\u003cp\u003eThe material also helps manage thermal currents inside the tube. By preventing disruptive breezes from crossing the light path and containing the boundary layer of air, it stabilizes the image and minimizes local seeing effects, leading to sharper, more detailed views of planets and double stars.\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\u003eCustom-Fit Design for Unobstructed Operation\u003c\/h3\u003e\n\u003cp\u003eThis is not a simple, shapeless bag. The Truss Shroud is made from a flexible, latex-type material that can be manipulated to achieve a snug fit on almost any 10\" truss-tube configuration. It is designed to accommodate the realities of an imaging or observing setup.\u003c\/p\u003e\n\u003cp\u003eYou can easily shape the shroud around your focuser, finder scope, and dovetail plates without impeding access or function. This ensures you get the full benefit of a darkened optical path without having to compromise the placement of your critical accessories, making setup and breakdown simple and repeatable.\u003c\/p\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\"\u003eWhat is the primary purpose of the Truss Shroud for a 10″ telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose is to improve image contrast. It achieves this in two ways: by \u003cstrong\u003eblocking stray ambient light\u003c\/strong\u003e from entering the optical path and by \u003cstrong\u003estabilizing air currents\u003c\/strong\u003e within the truss structure to reduce turbulence and improve image sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Truss Shroud improve images of faint objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a faint, extended object like the Orion Nebula (M42), a dark sky background is critical. The shroud prevents stray light from washing out the faint outer loops of nebulosity, making them more visible against a blacker sky. It also helps stabilize the view, allowing for higher-magnification study of the Trapezium star cluster at the nebula's core.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this shroud fit my 10\" Dobsonian if it has a truss design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this shroud is designed for 10\" truss-tube telescopes, which includes many popular truss-tube Dobsonian models. The flexible material allows it to be fitted around various hardware configurations, including the altitude bearings and accessory mounts typical of Dobsonian bases.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the material of the Truss Shroud breathable?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe material is designed to control airflow, not block it entirely, which is crucial for allowing the telescope's optics to reach thermal equilibrium with the ambient air. It shields the light path from disruptive cross-breezes while still permitting slow, stable air exchange to prevent the buildup of heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Truss Shroud around my focuser and finder?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe material is highly flexible. You simply stretch and manipulate the fabric to create openings or form-fit contours around your accessories. It can be pulled up to and around the base of a focuser or finder bracket, ensuring a tight seal against light leaks without interfering with their operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes using the Truss Shroud present any disadvantages?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main trade-off for any shroud is wind. While it protects the optics from disruptive breezes, the shroud itself presents a larger surface area and can act like a sail in gusty conditions. On very windy nights, this can cause vibrations in the telescope structure, so it's best used in calm to moderately breezy conditions.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e10″ Truss-Tube Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBlack, light-proof, flexible fabric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Function\u003c\/td\u003e\n\u003ctd\u003eStray light and airflow control\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369095965,"sku":"OOUK-ODK10TR-MS","price":1193.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk12tr-ms","title":"Orion Optics UK Truss Shroud for 12″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for 12\" Truss Telescopes\u003c\/li\u003e\n\u003cli\u003eBlocks Stray Light to Maximize Contrast\u003c\/li\u003e\n\u003cli\u003eBreathable Material Manages Airflow\u003c\/li\u003e\n\u003cli\u003ePrevents Internal Tube Currents\u003c\/li\u003e\n\u003cli\u003eFlexible Fit Around Accessories and Dovetails\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\u003eTruss Shroud for 12″ Telescopes\u003c\/h2\u003e\n      \u003cp\u003eThe Truss Shroud for 12″ telescopes is an essential accessory for maximizing image contrast, crafted from a specialized black latex-type material to completely block stray light and manage internal air currents, preserving the optical stability of your 12″ instrument.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eCustom Fit for 12\" Truss Telescopes: Complete Light Blockage\u003c\/h3\u003e\n      \u003cp\u003eStray light from streetlights, the Moon, or even a nearby laptop screen can drastically reduce the contrast of faint deep-sky objects. This shroud uses a highly opaque, black latex-type material to create a dark optical tube, ensuring your mirror's view is shielded from any off-axis light pollution. The fabric is designed to be moved and manipulated, allowing you to create a tight seal around focusers, finders, and dovetail plates for total light control.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eBreathable Design: Defeating Tube Currents for Sharper Views\u003c\/h3\u003e\n      \u003cp\u003eA sealed tube can trap heat, creating a boundary layer of warm air that rises from the primary mirror and degrades image sharpness—a phenomenon known as tube current. This shroud's material is purpose-built to be breathable, allowing air to flow freely and equalize with the ambient temperature. By preventing heat buildup, the shroud helps maintain thermal stability within the optical path, resulting in steadier, more detailed planetary and lunar views.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\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 primary purpose of the Truss Shroud for a 12″ telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Truss Shroud for 12\" telescopes serves two critical functions. First, it \u003cstrong\u003eblocks stray ambient light\u003c\/strong\u003e from entering the optical path, which dramatically improves image contrast by darkening the sky background. Second, its breathable material \u003cstrong\u003eprevents the formation of tube currents\u003c\/strong\u003e by allowing air to circulate, which preserves image stability for sharper, high-resolution views.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this Truss Shroud help when imaging planets with a 12\" ODK telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor planetary imaging with a high-resolution instrument like a 12\" ODK, image stability is paramount. The shroud's most significant benefit is minimizing tube currents—the shimmering effect caused by heat rising from the mirror. By allowing air to flow, it helps stabilize the image, allowing you to capture finer details in Jupiter's cloud bands or the Cassini Division in Saturn's rings.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the material of the 12\" Truss Shroud?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe shroud is made from a \u003cstrong\u003eblack latex-type material\u003c\/strong\u003e specifically chosen for astronomy. This fabric is both opaque enough to block stray light effectively and breathable enough to allow passive air circulation, preventing the buildup of heat inside the telescope's truss structure.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Truss Shroud fit around my focuser and filter wheel on my 12\" telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The material is designed to be flexible and can be manipulated to fit around most accessory combinations. You can adjust its position to create a snug cover over dovetail plates, focusers, and other equipment attached to the upper cage, ensuring no light leaks compromise your view.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a shroud important for observing faint objects like the Veil Nebula (NGC 6960) with a 12\" truss scope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eObserving faint, extended objects like the Veil Nebula (NGC 6960) is all about contrast. Any stray light will wash out the delicate filamentary structure of the nebula, rendering it invisible. The 12\" Truss Shroud creates a completely dark background, making the faint glow of the nebula stand out against a truly black sky, which is essential for seeing its full extent.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this 12\" Truss Shroud waterproof or intended for dew protection?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, this shroud is not designed to be a waterproof or primary dew shield. Its main purpose is controlling light and airflow. While it may offer minimal protection from light dew, it is not a substitute for a dedicated dew shield or a protective cover for your telescope during storage or inclement weather.\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\u003eVendor SKU\u003c\/td\u003e\n\u003ctd\u003eODK12Tr MS\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\"\u003eTruss Shroud 12″ Telescope\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\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369161501,"sku":"OOUK-ODK12TR-MS","price":1485.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk14tr-ms","title":"Orion Optics UK Truss Shroud for 14″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks stray light to increase image contrast\u003c\/li\u003e\n\u003cli\u003eBreathable material allows airflow to prevent tube currents\u003c\/li\u003e\n\u003cli\u003eDesigned for 14-inch open-truss telescopes\u003c\/li\u003e\n\u003cli\u003eFlexible material fits around focusers, finders, and dovetails\u003c\/li\u003e\n\u003cli\u003eLightweight and easy to install\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\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\u003eTruss Shroud for 14″ Telescopes\u003c\/h2\u003e\n      \u003cp\u003eThis Truss Shroud for 14″ Telescopes is an essential accessory for any open-frame instrument, engineered from a black, latex-type material to eliminate stray light and preserve thermal equilibrium. By darkening the optical path, it dramatically improves contrast for viewing faint deep-sky objects. The material is designed to allow critical airflow, preventing the formation of image-degrading tube currents that can soften planetary and lunar detail.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eBlock Stray Light and Boost Contrast on Your 14\" Truss\u003c\/h3\u003e\n      \u003cp\u003eAn open-truss design is excellent for portability and rapid cooling, but it leaves the optical path vulnerable to stray light from streetlights, security lamps, or even a bright Moon. This shroud creates a dark interior, effectively restoring the high-contrast environment of a solid-tube telescope. The result is a significantly darker sky background, allowing you to perceive fainter nebulosity and more subtle galactic detail from your 14-inch instrument.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eMaintain Thermal Equilibrium with Engineered Airflow\u003c\/h3\u003e\n      \u003cp\u003eUnlike impermeable materials that trap a column of warm air, this shroud's breathable fabric is made specifically to \"keep the air flowing.\" This design choice is critical for high-resolution observing, as it allows your primary mirror to reach thermal equilibrium with the ambient night air. By preventing the buildup of warm tube currents, the shroud helps ensure your views remain sharp and steady, free from the heat plumes that can ruin fine detail.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAdaptive Fit for Focusers, Finders, and Accessories\u003c\/h3\u003e\n      \u003cp\u003eThis shroud is not a rigid, unforgiving cylinder. Its flexible, latex-type material allows you to move and manipulate it to achieve a custom fit around your unique accessory configuration. You can easily stretch or position the fabric to accommodate large focusers, multiple finderscopes, dovetail plates, and other equipment without compromising its light-blocking function, ensuring a tight fit for your specific 14-inch setup.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a shroud necessary for my 14\" truss telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA shroud is essential for blocking stray light from entering the optical path of a 14\" truss telescope. This significantly increases image contrast by creating a darker background sky, making it easier to see faint deep-sky objects like galaxies and nebulae, especially from light-polluted locations.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this 14\" Truss Shroud help with thermal management?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe material is specifically designed to be breathable, allowing air to flow freely through the optical tube. This prevents the formation of warm air pockets and \"tube currents\" which can distort the view. It helps your telescope's optics acclimate to the ambient temperature faster, resulting in sharper, more stable images.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 14\" Truss Shroud fit around my specific focuser and finder scope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the shroud is made from a flexible, latex-type material that can be moved and manipulated. This allows it to conform to various equipment configurations, fitting snugly around different focusers, finder brackets, and dovetail plates on your 14-inch telescope.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill using this Truss Shroud on my 14\" scope prevent dew?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile the primary function of the shroud is to block stray light, it can offer some protection against dew forming on the secondary mirror by shielding it from the open sky. However, it is not a substitute for a dedicated dew heater system in very damp conditions, especially for the primary mirror.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI observe from a light-polluted area. How will this 14\" Truss Shroud improve my views of the Orion Nebula (M42)?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFrom a light-polluted site, the sky background is bright, washing out faint details. By installing this shroud on your 14\" scope, you block local light sources from directly entering the eyepiece. This will make the background sky in the eyepiece much darker, dramatically improving the contrast and visibility of the faint outer loops and intricate dust lanes within the Orion Nebula (M42).\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIf the material is breathable, will it let in dust?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe breathable material prioritizes thermal stability over creating a perfect seal. While it will block the majority of airborne contaminants, some fine dust may still enter the optical tube over time. This represents a trade-off: optimal image stability from airflow versus the complete dust protection of a solid, unventilated tube.\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      \n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369259805,"sku":"OOUK-ODK14TR-MS","price":1677.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk16tr-ms","title":"Orion Optics UK Truss Shroud for 16″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks stray light in open-tube truss designs\u003c\/li\u003e\n\u003cli\u003eImproves image contrast for faint deep-sky objects\u003c\/li\u003e\n\u003cli\u003eBreathable material helps maintain thermal equilibrium\u003c\/li\u003e\n\u003cli\u003eFlexible fabric fits around focusers, finders, and dovetails\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for 16-inch truss telescopes\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\u003eTruss Shroud for 16″ Telescopes\u003c\/h2\u003e\n\u003cp\u003eThis Truss Shroud for 16″ Telescopes is essential for maximizing contrast in any open-tube instrument by completely blocking stray light from reaching the focal plane. Made from a flexible, black latex-type material, it is engineered to eliminate internal reflections and skyglow that can wash out faint galaxies and nebulae, restoring a dark background to your images and visual observations. Its adaptable design allows it to be manipulated to fit securely around focusers, dovetail plates, and other accessories without compromising coverage.\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\u003eStray Light Suppression for 16\" Truss Telescopes\u003c\/h3\u003e\n\u003cp\u003eThe open-frame design of a 16\" truss telescope is excellent for portability and rapid cooling, but it leaves the optical path vulnerable to stray light from streetlights, moon glow, or even a nearby laptop screen. This shroud creates a dark optical tunnel, effectively converting your truss tube into a solid tube environment. This single change dramatically increases image contrast, making it easier to resolve faint details like the outer arms of the Pinwheel Galaxy (M101) or the delicate filaments of the Orion Nebula (M42).\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\u003eOptimized Airflow and Dew Prevention\u003c\/h3\u003e\n\u003cp\u003eUnlike non-breathable materials that can trap heat and create tube currents that degrade seeing, this shroud is made from a material that allows for passive airflow. It helps your telescope reach and maintain thermal equilibrium with the ambient air while still blocking disruptive wind gusts. The fabric also serves as a barrier against dew, preventing moisture from settling on your secondary mirror and extending your observing or imaging session on damp nights.\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\u003eAdaptive Fit for Focusers and Accessories\u003c\/h3\u003e\n\u003cp\u003eA key challenge with any shroud is accommodating the various accessories attached to a telescope. This shroud's flexible, latex-type material can be easily stretched and positioned to create a snug fit around your focuser, finder scope, and dovetail plates. This ensures there are no light leaks, providing complete optical path protection regardless of your specific equipment configuration, a critical feature for astrophotographers running complex imaging trains.\u003c\/p\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\"\u003eWhy do I need this Truss Shroud for my 16\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn open-truss telescope, while lightweight, allows stray light to enter the optical path, which severely reduces contrast and makes it difficult to see faint objects. The \u003cstrong\u003eTruss Shroud 16\"\u003c\/strong\u003e blocks this light, creating a darker sky background and making faint details in galaxies and nebulae significantly more visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this shroud cause my 16\" telescope to overheat or create tube currents?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the material is specifically chosen to be breathable. This allows heat to dissipate and prevents the formation of warm air pockets (tube currents) that can harm image stability. It blocks wind while allowing the telescope's structure to remain at thermal equilibrium with the surrounding air.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Truss Shroud 16\" fit around my focuser and other accessories?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe shroud is made from a flexible, stretchable material. You can easily manipulate it to fit snugly around your focuser, finder scope brackets, and dovetail plates. This adaptability ensures a tight seal against light leaks without interfering with your equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill using the Truss Shroud 16\" improve my views of faint objects like the Veil Nebula (NGC 6960)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The Veil Nebula is a classic example of a faint, low-contrast object that benefits immensely from a dark sky background. By eliminating stray light, the \u003cstrong\u003eTruss Shroud 16\"\u003c\/strong\u003e will make the delicate filaments of the nebula stand out much more clearly against the blackness of space, especially from light-polluted locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the material on the Truss Shroud 16\" waterproof?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe material is highly effective at preventing dew from forming on your secondary mirror. While it will repel light moisture, it is not designed to be fully waterproof in heavy rain. Its primary functions are blocking light and dew while maintaining breathability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow difficult is it to install the Truss Shroud 16\" in the dark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. The elastic nature of the material allows it to be easily stretched over the truss poles and upper cage of your telescope. While it adds one extra step to your setup routine, most users find they can install it in just a minute or two, even in the dark.\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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e16-inch Open-Frame Truss Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eFlexible, breathable black latex-type fabric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Function\u003c\/td\u003e\n\u003ctd\u003eStray light and dew suppression\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369489181,"sku":"OOUK-ODK16TR-MS","price":1768.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk18tr-ms","title":"Orion Optics UK Truss Shroud 18″ Telescope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlocks stray light to increase image contrast\u003c\/li\u003e\n\u003cli\u003eBreathable material maintains crucial airflow\u003c\/li\u003e\n\u003cli\u003ePrevents image-degrading tube currents\u003c\/li\u003e\n\u003cli\u003eFlexible material fits around focusers and accessories\u003c\/li\u003e\n\u003cli\u003eDesigned for 18-inch truss-tube telescopes\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\u003eTruss Shroud 18″ Telescope\u003c\/h2\u003e\n\u003cp\u003eSpecifically designed for 18″ truss-tube telescopes, this black latex-type shroud provides essential stray light rejection while allowing critical airflow to prevent tube currents, dramatically improving image contrast and stability for deep-sky observation and imaging.\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\u003eMaximize Contrast in Your 18\" Truss Telescope\u003c\/h3\u003e\n\u003cp\u003eAn open-truss telescope offers incredible aperture for its weight, but its open design is susceptible to stray light and thermal instability. This shroud solves both problems with a single, essential accessory. By blocking off-axis light from streetlights, yard lights, or even bright moonlight, it significantly darkens the background sky, making faint nebulae and distant galaxies stand out with enhanced contrast.\u003c\/p\u003e\n\u003cp\u003eUnlike simple covers, this shroud is made from a breathable, latex-type material engineered for astronomy. It allows air to flow freely through the optical tube, helping your telescope's primary mirror reach thermal equilibrium with the ambient air. This ventilation is critical for preventing the formation of \"tube currents\"—internal air turbulence that blurs fine details and degrades seeing, especially during high-magnification planetary viewing.\u003c\/p\u003e\n\u003cp\u003eThe material is also highly flexible, allowing you to manipulate and stretch it to achieve a custom fit. It easily accommodates focusers, finder brackets, dovetail plates, and other accessories without compromising its light-blocking function, ensuring your 18\" instrument performs at its optical peak.\u003c\/p\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\"\u003eWhy is a shroud necessary for an 18\" truss telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 18\" truss telescope has an open optical tube, which allows stray light from external sources to enter the light path and reflect off internal surfaces. This washes out faint details and reduces contrast. A shroud \u003cstrong\u003eblocks this stray light\u003c\/strong\u003e, resulting in a darker sky background and making it easier to see faint deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Truss Shroud 18\" Telescope improve views of faint objects like the Veil Nebula (NGC 6960)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eObjects like the Veil Nebula (NGC 6960) are extremely faint and require high-contrast views to appreciate their delicate structure. By eliminating stray light, this \u003cstrong\u003e18\" Truss Shroud\u003c\/strong\u003e darkens the sky background, making the faint filaments of the nebula \"pop\" against the blackness of space, especially when used with a nebula filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Truss Shroud 18\" Telescope cause my mirror to dew up?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis shroud is made from a \u003cstrong\u003ebreathable material\u003c\/strong\u003e specifically to prevent this issue. It allows air to circulate, which helps prevent the primary mirror from cooling below the dew point too quickly. While it doesn't eliminate the risk of dew entirely in very humid conditions, it is far superior to non-breathable materials that trap moist, stagnant air inside the tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Truss Shroud 18\" Telescope if I have accessories attached?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The shroud is made from a flexible, manipulative material. You can stretch and position it to fit snugly \u003cstrong\u003earound focusers, finder scopes, dovetail plates, and other mounted accessories\u003c\/strong\u003e, ensuring a tight, light-proof fit without having to remove your essential gear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is airflow important in an 18\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large 18\" mirror takes time to cool to the ambient night air temperature. If warm air is trapped in the optical tube, it creates \"tube currents\" that distort the light path and blur the image, an effect similar to looking over hot pavement. The \u003cstrong\u003ebreathable fabric\u003c\/strong\u003e of this shroud allows the scope to cool efficiently and maintains stable air, leading to sharper, steadier views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this shroud help with planetary imaging on my 18\" telescope, for example on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHigh-resolution planetary imaging of targets like Jupiter is highly sensitive to atmospheric instability, including localized tube currents. By maintaining smooth airflow and helping the optics stabilize thermally, the \u003cstrong\u003e18\" Truss Shroud\u003c\/strong\u003e minimizes a key source of local \"bad seeing.\" This results in a steadier image at the camera sensor, allowing you to capture finer details in Jupiter's cloud bands and the Great Red Spot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369587485,"sku":"OOUK-ODK18TR-MS","price":1768.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk20tr-ms","title":"Orion Optics UK Truss Shroud for 20″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for 20″ open-truss telescopes\u003c\/li\u003e\n\u003cli\u003eBlocks stray light to dramatically increase image contrast\u003c\/li\u003e\n\u003cli\u003eSpecialized breathable material promotes thermal stability\u003c\/li\u003e\n\u003cli\u003ePrevents distracting tube currents and heat plumes\u003c\/li\u003e\n\u003cli\u003eFlexible fabric fits around focusers, finders, and dovetails\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\u003eTruss Shroud for 20″ Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Truss Shroud for 20″ Telescopes is an essential accessory designed to unlock the full contrast potential of your large-aperture instrument by eliminating stray light. Crafted from a specialized black, latex-type material, this shroud creates a completely dark optical path while maintaining the critical airflow needed for thermal equilibrium in a 20″ truss design.\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\u003eMaximize Contrast on Your 20″ Scope by Eliminating Stray Light\u003c\/h3\u003e\n\u003cp\u003eAn open truss design is excellent for portability and rapid cooling, but it leaves the optical path vulnerable to off-axis light from streetlights, moonlight, or even a bright laptop screen. This stray light reduces contrast, washing out faint details in galaxies and nebulae. This shroud provides a simple, effective solution by completely enclosing the truss poles, ensuring your eye or camera sees only the light from your intended target against a black sky.\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\u003eEngineered Airflow for a Thermally Stable 20″ Optical Path\u003c\/h3\u003e\n\u003cp\u003eUnlike simple, non-breathable covers that can trap heat and create damaging tube currents, this shroud is made from a material specifically chosen for astronomy. It is engineered to allow air to flow freely through the fabric, helping your 20″ mirror reach and maintain ambient temperature. This thermal stability results in sharper, steadier views, especially during long imaging sessions or nights with dropping temperatures.\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\u003eFlexible Design for Custom Truss Coverage\u003c\/h3\u003e\n\u003cp\u003eEvery imaging setup is unique. This shroud's flexible, manipulative material allows you to achieve a custom fit around your specific configuration of accessories. You can easily stretch and position the fabric to cover gaps around dovetail plates, finderscopes, and the focuser assembly, creating a truly dark environment without interfering with your equipment.\u003c\/p\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\"\u003eWhat is the primary purpose of the Truss Shroud for a 20″ telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary purpose is to \u003cstrong\u003eblock stray light\u003c\/strong\u003e from entering the optical path of an open-truss telescope. This significantly increases image contrast, making it easier to see faint details in deep-sky objects and improving planetary observations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this Truss Shroud help with thermal management on a 20″ ODK?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe shroud is made of a breathable, latex-type material that \u003cstrong\u003eallows air to flow freely\u003c\/strong\u003e. This prevents the buildup of warm air inside the optical tube, which can cause \"tube currents\" that degrade image sharpness. It helps the 20\" primary mirror and entire optical assembly remain at ambient temperature for more stable views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the material of the 20″ Truss Shroud waterproof?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis shroud is designed primarily for light control and airflow, not for weatherproofing. While the latex-type material may offer some resistance to dew, it should not be considered waterproof. It is intended to be used during observing sessions, not as a permanent or protective cover against rain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 20″ Truss Shroud fit around my focuser and filter wheel setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the material is described as flexible and manipulative. This allows you to stretch and position it to create a snug fit around most common accessory configurations, including focusers, filter wheels, and finderscopes, ensuring no light leaks into the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a breathable shroud better than a solid tube for my 20″ truss Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA solid tube can trap a column of air, which cools at a different rate than the outside air, creating persistent thermal currents that soften the image. A breathable shroud like this one for your 20\" Dobsonian allows the telescope to equalize with the ambient temperature much more effectively, providing sharper and more stable views while still blocking stray light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does using the 20″ Truss Shroud improve views of faint targets like the Horsehead Nebula (Barnard 33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eExtremely faint, low-contrast targets like the Horsehead Nebula are easily washed out by even minor light pollution or stray light. By creating a darker background sky, the 20\" Truss Shroud increases the contrast between the nebula and its surroundings, making the faint dust lanes significantly easier to detect visually or to capture in an astrophoto.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\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\"\u003eTruss Shroud for 20″ Telescopes\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\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369653021,"sku":"OOUK-ODK20TR-MS","price":1960.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-odk24tr-ms","title":"Orion Optics UK Truss Shroud for 24″ Telescopes","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for 24\" Truss Tube Telescopes\u003c\/li\u003e\n\u003cli\u003eBlocks Stray Light to Maximize Contrast\u003c\/li\u003e\n\u003cli\u003eBreathable Material Prevents Tube Currents\u003c\/li\u003e\n\u003cli\u003eFlexible Fabric Fits Around Accessories\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\u003eTruss Shroud for 24″ Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Truss Shroud for 24″ telescopes is an essential accessory for optimizing contrast and thermal stability in large, open-tube instruments by blocking stray light and managing internal air currents.\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\u003eStray Light and Thermal Control for 24\" Truss Telescopes\u003c\/h3\u003e\n\u003cp\u003eAn open truss design offers portability for large apertures but exposes the optical path to stray light and thermal instability. This shroud, made from a black, latex-type material, solves both problems. It creates a dark interior, preventing off-axis light from streetlights, the Moon, or other sources from reaching the focal plane and washing out faint details on planets and deep-sky objects.\u003c\/p\u003e\n\u003cp\u003eCritically, the material is designed to \"keep the air flowing.\" This breathable nature allows heat radiating from the primary mirror to escape rather than becoming trapped, preventing the formation of image-degrading tube currents. The result is a more stable, higher-resolution view, especially during long imaging sessions or nights with subtle temperature changes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable Fit:\u003c\/strong\u003e The flexible material can be stretched and manipulated to create a snug fit around focusers, finderscopes, and dovetail plates without leaving gaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from a material developed specifically for the demands of astronomical observing, it resists wear while maintaining its light-blocking properties.\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\"\u003eWhy do I need a shroud for my 24\" truss telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA shroud serves two primary functions. First, it \u003cstrong\u003eblocks stray light\u003c\/strong\u003e from entering the optical path, which significantly improves image contrast by darkening the sky background. Second, it helps \u003cstrong\u003estabilize the air\u003c\/strong\u003e inside the tube, minimizing thermal currents that can degrade image sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 24\" Truss Shroud fit around my focuser and other accessories?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The shroud is made from a flexible, latex-type material that is designed to be moved and manipulated. You can stretch and position it to fit securely around your focuser, finder brackets, and dovetail plates for a complete light seal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this 24\" Truss Shroud help with thermal management?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe material is specifically described as helping to \"keep the air flowing.\" This breathability is crucial for preventing heat from the primary mirror from getting trapped inside the optical tube. By allowing warm air to escape, the shroud minimizes the formation of tube currents, which are a major cause of soft or blurry views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the material of the 24\" Truss Shroud waterproof?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe provided information does not state whether the material is waterproof. Its main purpose is to block stray light and allow for airflow to manage thermals, not to serve as a rain or heavy dew cover.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eObserving from my backyard, how will this 24\" Truss Shroud improve views of the Whirlpool Galaxy (M51)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBy blocking stray light from neighborhood sources, the 24\" Truss Shroud will create a darker background sky in your eyepiece. This increases the contrast between the galaxy and the sky, making it easier to see faint, extended details like the spiral arms of M51 and the connecting bridge to its companion galaxy, NGC 5195.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 24\" Truss Shroud act like a sail on my telescope on a windy night while imaging Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAny shroud can catch some wind. However, the primary benefit of controlling stray light and thermals often outweighs the risk of wind-induced vibration, especially for planetary imaging where contrast is key. On very windy nights, you may need to assess whether the conditions are suitable for high-resolution imaging with or without the shroud.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942369751325,"sku":"OOUK-ODK24TR-MS","price":2344.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"orion-optics-uk-omc140-black-anodised-alum-screw-on-dust-cover","title":"Orion Optics UK OMC140 Black anodised alum screw on dust cover","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBlack anodised aluminium\u003c\/li\u003e\n\u003cli\u003eScrews onto the OMC140 corrector cell\u003c\/li\u003e\n\u003cli\u003eProtects the corrector plate\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\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\u003eOMC140 Dust Cover\u003c\/h2\u003e\n\u003cp\u003eA black anodised aluminium screw-on dust cover for the OMC140 optical tube assembly, protecting the corrector plate when not in use.\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\u003eProtecting the Corrector Plate\u003c\/h3\u003e\n\u003cp\u003eKeeps dust and debris off the OMC140's corrector plate between sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eFits\u003c\/td\u003e\n\u003ctd\u003eOMC140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAnodised aluminium\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\"\u003eOMC140 Dust Cover\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\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/orion-optics-uk-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eOrion Optics UK 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orion Optics UK","offers":[{"title":"Default Title","offer_id":52942564196637,"sku":"OOUK-OMC140-BLACK-ANODISED-ALUM-SCREW","price":224.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_72ea5c39-6c84-4391-90cc-0431d228ea55.jpg?v=1789607938"}],"url":"https:\/\/davidastro.com\/fr\/collections\/orion-optics-uk-cases-and-covers.oembed","provider":"David Astro","version":"1.0","type":"link"}