{"title":"Orion Optics UK VX Newtonian Telescopes","description":"\u003cp\u003eOrion Optics UK VX Newtonian telescopes are optical tube assemblies made in the UK in apertures from 6\" to 20\". The line includes the VX6, VX8, VX10, VX12, VX14 and VX16, the longer focal length VX6L, VX8L, VX10L and VX12L, and the VX20 DOB tube for large Dobsonian builds.\u003c\/p\u003e\u003cp\u003eThe standard tubes serve both visual deep-sky observing and imaging, while the L versions give higher magnification and a smaller secondary for planetary contrast.\u003c\/p\u003e","products":[{"product_id":"orion-optics-uk-vx6","title":"Orion Optics UK VX6 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e150mm (6\") primary mirror diameter\u003c\/li\u003e\n\u003cli\u003e750mm focal length at a fast f\/5 focal ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV wavefront optics with Zygo test report\u003c\/li\u003e\n\u003cli\u003eLightweight 4.5kg aluminium optical tube\u003c\/li\u003e\n\u003cli\u003e9-point primary mirror cell with cooling fan\u003c\/li\u003e\n\u003cli\u003e2\" focuser with reduction gearing for precise adjustment\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\u003eOrion Optics UK VX6 Optical Tube Assembly\u003c\/h2\u003e\n      \u003cp\u003eThe Orion Optics UK VX6 Optical Tube Assembly packages a hand-figured, 150mm primary mirror into a lightweight 4.5kg chassis, delivering verifiable optical precision at an accessible level. With a 750mm focal length producing a fast f\/5 focal ratio, the VX6 comes standard with 1\/6 PV wavefront optics, proven by an included Zygo interferometer report, making it a powerful and portable instrument for both detailed visual observation and wide-field astrophotography.\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\u003eHand-Figured 1\/6 PV Optics: Precision You Can Verify\u003c\/h3\u003e\n      \u003cp\u003eThe core of the VX6 is its 150mm primary mirror, which is hand-finished in the UK to a guaranteed 1\/6 Peak-to-Valley (PV) wavefront accuracy. Unlike mass-produced optics with ambiguous quality claims, every VX series telescope includes a Zygo laser interferometer report, giving you documented proof of its optical precision. This standard ensures sharp, high-contrast images that resolve fine detail on planets and reveal faint structures in deep-sky objects.\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\u003eEngineered for Stability: The 9-Point Cell and 50mm Secondary\u003c\/h3\u003e\n      \u003cp\u003eOptical quality is maintained by a robust mechanical system. The primary mirror rests on a 9-point suspension cell that distributes its weight evenly, preventing flexure and preserving the mirror's precise figure regardless of the telescope's orientation. An integrated cooling fan helps the mirror reach thermal equilibrium with the ambient air quickly, minimizing tube currents and ensuring stable, sharp views from the start of your session. The 50mm secondary mirror provides full illumination for a wide range of cameras, a necessary trade-off for a fast f\/5 imaging system.\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\u003ePortable f\/5 Imaging: The 4.5kg Aluminium Tube\u003c\/h3\u003e\n      \u003cp\u003eWeighing only 4.5kg and measuring 750mm in length, the VX6 is built for portability. Its lightweight aluminium construction allows it to be carried by a wide range of entry-level and intermediate German equatorial mounts without sacrificing stability. The fast f\/5 focal ratio captures significant light in shorter exposures, while the 2\" focuser with reduction gearing enables the fine adjustments necessary to achieve critical focus for astrophotography.\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\u003eChoosing Your Grade: 1\/6 PV vs. 1\/8 PV and 1\/10 PV Ultra\u003c\/h3\u003e\n      \u003cp\u003eWhile the standard 1\/6 PV optic delivers excellent performance, optional upgrades to 1\/8 PV (Research Grade) or 1\/10 PV (Ultra Grade) are available for the most demanding applications. Moving to a higher grade of accuracy yields visibly higher contrast and resolution on challenging targets. This is most apparent during high-magnification views of planetary details, such as the Cassini Division in Saturn's rings or subtle banding on Jupiter, where a smoother wavefront translates directly into a sharper, more stable image.\u003c\/p\u003e\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 real-world difference between the 1\/6 PV, 1\/8 PV, and 1\/10 PV optics on the VX6?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe PV (Peak-to-Valley) wavefront value measures how closely the mirror's surface matches a perfect parabola. A smaller fraction indicates a more accurate mirror. While the standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic is excellent for all-around observing, upgrading to \u003cstrong\u003e1\/8 PV\u003c\/strong\u003e or \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e provides a noticeable increase in image sharpness and contrast, especially critical for high-resolution planetary imaging and observation.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the VX6 perform on planetary targets like Jupiter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe VX6's 150mm aperture and hand-figured optics make it a capable planetary instrument. You can expect to clearly resolve Jupiter's main cloud belts, the Great Red Spot, and its four Galilean moons. For the best results, ensure the telescope is fully cooled using the integrated fan and consider the optional 1\/8 PV or 1\/10 PV upgrades to maximize visible detail.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 4.5kg weight of the VX6 suitable for a portable GoTo mount?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, at only \u003cstrong\u003e4.5kg\u003c\/strong\u003e, the VX6 OTA is an excellent match for popular portable GoTo mounts like the Sky-Watcher HEQ5 or Celestron Advanced VX. This combination creates a powerful and easily transportable setup for both visual astronomy and astrophotography from dark sky sites.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 9-point mirror cell in the VX6 do?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003e9-point mirror cell\u003c\/strong\u003e provides uniform support for the 150mm primary mirror. This prevents the glass from sagging or deforming under its own weight as the telescope moves, which would distort the image. This robust support system is critical for maintaining the high-precision figure of the hand-finished optics.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the VX6's fan cooling make a noticeable difference?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. The integrated cooling fan actively draws air over the back of the primary mirror, helping it reach the same temperature as the outside air much faster than passive cooling alone. This minimizes \"tube currents\"—internal air turbulence that degrades image sharpness—allowing you to get stable, high-quality views much sooner after setting up.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of imaging is the VX6's f\/5 focal ratio best for?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003ef\/5 focal ratio\u003c\/strong\u003e is considered fast, making the VX6 ideal for wide-field astrophotography of large deep-sky objects like the Andromeda Galaxy (M31) or the Orion Nebula (M42). It allows you to capture more light in shorter exposure times, reducing the demands on your mount's tracking accuracy.\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\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e750mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eStandard Optics Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Upgrades\u003c\/td\u003e\n\u003ctd\u003eOptional 1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e4.5kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e750mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e167mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003e9-point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated mirror cooling fan\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\"\u003eVX6 Optical Tube Assembly\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":"Professional (1\/6 PV)","offer_id":52942640382237,"sku":"OOUK-VX6","price":946.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942640415005,"sku":"OOUK-VX6-1-8-PV-OPTICS","price":1017.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942640447773,"sku":"OOUK-VX6-1-10-PV-OPTICS","price":1035.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX6-Optical-Tube-Assembly-1_9c9b5623-b565-4cf0-8e71-35ff6bd18f4f.jpg?v=1789608512"},{"product_id":"orion-optics-uk-vx6l","title":"Orion Optics UK VX6L Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e150mm Primary Mirror\u003c\/li\u003e\n\u003cli\u003e1200mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e1\/6 PV Wavefront Standard Optical Grade\u003c\/li\u003e\n\u003cli\u003eLightweight 5kg Aluminum Tube\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\u003eOrion Optics UK VX6L Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX6L Optical Tube Assembly delivers exceptional planetary and lunar contrast by pairing a 150mm primary mirror with a long 1200mm focal length. This classic f\/8 Newtonian design is built around hand-figured optics guaranteed to a 1\/6 PV wavefront accuracy, all housed in a lightweight 5kg aluminum tube supported by a 9-point mirror cell with an integrated cooling fan.\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\u003e1\/6 PV Optics: Zygo-Verified Planetary and Lunar Detail\u003c\/h3\u003e\n\u003cp\u003eEvery VX6L primary mirror is hand-finished and certified to a minimum 1\/6 PV wavefront accuracy on a Zygo laser interferometer, with the test report included. This precision ensures that the maximum amount of light is focused into a single point, revealing fine details in Jupiter's cloud bands, the Cassini Division in Saturn's rings, and subtle lunar rilles. For the most demanding observers, optional upgrades to 1\/8 PV or 1\/10 PV Ultra grades are available for near-perfect optical correction.\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\u003eThe f\/8 Advantage: High Contrast from a 150mm Aperture\u003c\/h3\u003e\n\u003cp\u003eThe VX6L's f\/8 focal ratio provides tangible benefits for high-magnification viewing. The long 1200mm focal length produces a less demanding light cone, making collimation easier to achieve and maintain while placing fewer demands on eyepiece correction. This design, combined with a minimal 37mm secondary mirror, maximizes image contrast by reducing the central obstruction, rendering deep sky backgrounds darker and planetary details sharper. The trade-off for this high-contrast view is a narrower field of view compared to faster f\/4 or f\/5 systems.\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\u003eVX6L Mechanical Build: A 5kg Platform for Stable Viewing\u003c\/h3\u003e\n\u003cp\u003eThe optical system is housed in a robust and lightweight aluminum tube, bringing the total weight to just 5kg. This makes the VX6L compatible with a wide range of portable equatorial mounts. The primary mirror is supported by a 9-point suspension cell to prevent flexure, and an integrated cooling fan accelerates thermal equilibrium for sharp images sooner. A 2\" focuser with reduction gearing allows for the precise, minute adjustments required to achieve critical focus at high power.\u003c\/p\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 real-world difference between the VX6L's standard 1\/6 PV and upgraded 1\/10 PV optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Peak-to-Valley (PV) wavefront number measures how closely the mirror's curve matches a perfect parabola. While the standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic provides excellent, sharp images, the \u003cstrong\u003e1\/10 PV Ultra\u003c\/strong\u003e upgrade offers a visibly higher level of contrast and resolution on challenging targets like planetary details and close double stars, especially during moments of steady seeing. The higher grade minimizes scattered light, resulting in a darker background sky and sharper focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the VX6L's f\/8 focal ratio perform on Jupiter's Great Red Spot?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe f\/8 design is ideal for observing Jupiter. The high-contrast optics will make the Great Red Spot (GRS) stand out distinctly against the surrounding cloud belts. The long focal length allows you to achieve high magnification with comfortable, longer focal length eyepieces, making it easier to resolve fine swirls and textures within the storm itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 5kg weight of the Orion Optics VX6L manageable for a portable setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. At only \u003cstrong\u003e5kg\u003c\/strong\u003e, the VX6L is an excellent choice for portable mounts in the EQ5\/AVX class. Its low weight and 1110mm length create a very stable combination that is less susceptible to wind and vibrations, allowing you to get the most out of the high-resolution optics from a backyard or dark-sky site.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a coma corrector for the Orion Optics VX6L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor visual use, a coma corrector is generally not necessary with an f\/8 Newtonian like the VX6L. Coma, the aberration that makes stars at the edge of the field look like comets, is minimal at this focal ratio. You will have a wide, well-corrected central field of view with sharp stars across most of the eyepiece view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 9-point mirror cell in the VX6L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003e9-point mirror cell\u003c\/strong\u003e provides distributed, even support for the 150mm primary mirror. This prevents the glass from sagging under its own weight, which would distort the mirror's precisely figured shape and degrade the image. This robust support system is critical for maintaining the optical performance of the telescope at any orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow important is the cooling fan on the VX6L for observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe integrated cooling fan is very important for reaching peak optical performance quickly. It circulates air behind the primary mirror, helping it cool down to the ambient nighttime temperature much faster than passive cooling alone. This minimizes \"tube currents\"—internal air turbulence that can soften the image and mimic poor atmospheric seeing.\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\u003eOptical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront (optional upgrades to 1\/8 PV and 1\/10 PV Ultra)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e37mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003e9-point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e5kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e167mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1110mm\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\"\u003eVX6L Optical Tube Assembly\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":"Professional (1\/6 PV)","offer_id":52942641496349,"sku":"OOUK-VX6L","price":946.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942641529117,"sku":"OOUK-VX6L-1-8-PV-OPTICS","price":1017.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942641561885,"sku":"OOUK-VX6L-1-10-PV-OPTICS","price":1035.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX6-Optical-Tube-Assembly-1_70d693dc-4a01-4472-827c-e2cb435114da.jpg?v=1789608521"},{"product_id":"orion-optics-uk-vx8","title":"Orion Optics UK VX8 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e200mm (8-inch) Primary Mirror\u003c\/li\u003e\n\u003cli\u003e900mm Focal Length\u003c\/li\u003e\n\u003cli\u003eFast f\/4.5 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV Wavefront Hand-Figured Optics\u003c\/li\u003e\n\u003cli\u003eLightweight 7kg Aluminium Tube\u003c\/li\u003e\n\u003cli\u003e2\" Focuser with Reduction Gearing\u003c\/li\u003e\n\u003cli\u003e9-Point CNC Mirror Cell with Cooling Fan\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\u003eOrion Optics UK VX8 Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX8 Optical Tube Assembly combines a fast f\/4.5 focal ratio with a 200mm primary mirror, hand-figured to a demanding 1\/6 PV wavefront standard and supplied with a Zygo interferometer report. Weighing a mere 7kg in its 860mm aluminium tube, this Newtonian is engineered for high-resolution imaging and deep-sky observation. The 900mm focal length provides an excellent image scale for a wide range of targets, supported by a CNC-machined 9-point mirror cell and active fan cooling.\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\u003eHand-Figured 1\/6 PV Wavefront Optics with Zygo Certification\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the VX8 is a 200mm primary mirror finished by hand to a guaranteed 1\/6 Peak-to-Valley (PV) wavefront accuracy. Unlike mass-produced optics, each mirror is individually tested on a Zygo laser interferometer, the same equipment used in professional optical labs. This process ensures the mirror's surface deviates from a perfect parabola by a tiny fraction of a wavelength of light, resulting in higher contrast, sharper stars, and the ability to resolve finer planetary detail.\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 Fast f\/4.5 System Weighing Just 7kg\u003c\/h3\u003e\n\u003cp\u003eThe VX8's f\/4.5 focal ratio is ideal for deep-sky imaging, allowing you to capture significant signal on faint nebulae and galaxies with shorter exposure times. This optical speed reduces demands on your mount's tracking accuracy and lets you complete imaging projects more efficiently. The entire assembly weighs only 7kg and has a tube length of 860mm, making it compatible with a wide range of mid-sized equatorial mounts and easy to transport to dark-sky sites.\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\u003ePrecision Focusing and Active Thermal Management\u003c\/h3\u003e\n\u003cp\u003eAchieving critical focus is essential with a fast optical system, and the VX8 is equipped with a 2\" focuser with reduction gearing for fine control. This allows for precise, minute adjustments necessary to get sharp stars across the field. The primary mirror is supported by a 9-point CNC-machined cell that prevents flexure, while an integrated cooling fan helps the mirror reach thermal equilibrium with the ambient air quickly, minimizing tube currents and ensuring your views are steady and sharp from the start of your session.\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\u003eChoosing Your Optical Grade: 1\/6 PV, 1\/8 PV, or 1\/10 PV Ultra\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV optic delivers excellent performance, Orion Optics UK offers optional upgrades for the most demanding observers. Moving from 1\/6 to 1\/8 PV provides a noticeable increase in contrast, especially valuable for resolving subtle cloud bands on Jupiter or faint detail in planetary nebulae. The 1\/10 PV \"Ultra\" grade represents the pinnacle of Newtonian optics, delivering near-perfect wavefronts for the highest possible resolution and image fidelity, revealing details that are simply lost in lesser systems.\u003c\/p\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 kind of mount do I need for the Orion Optics VX8 OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a tube weight of only \u003cstrong\u003e7kg\u003c\/strong\u003e, the VX8 is quite versatile. It performs well on mid-range equatorial mounts rated for a payload capacity of 13-15kg (28-33 lbs) for imaging. This leaves ample capacity for a guide scope, camera, and other accessories without straining the mount's mechanics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the real-world difference between the 1\/6 PV and 1\/10 PV optics on the VX8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe difference is most apparent at high magnification on high-contrast targets. On a planet like Jupiter, a \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e mirror will show finer, higher-contrast detail in the cloud bands and more intricate structure in the Great Red Spot compared to the already excellent \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic. For deep-sky imaging, the higher-grade optic produces tighter, more point-like stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the VX8's f\/4.5 optics perform for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/4.5\u003c\/strong\u003e focal ratio is ideal for large, bright targets like the Orion Nebula (M42). You can capture the faint outer loops and intricate details within the Trapezium region with significantly shorter sub-exposures compared to an f\/8 or f\/10 system. For best results across the entire field, pairing the VX8 with a coma corrector is highly recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the standard 1\/6 PV VX8 good enough for resolving detail like Jupiter's Great Red Spot?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. A \u003cstrong\u003e1\/6 PV wavefront\u003c\/strong\u003e optic is a high-performance standard that easily exceeds the \"diffraction-limited\" benchmark. Under steady seeing conditions, the standard VX8 will provide sharp, detailed views of Jupiter, clearly showing the Great Red Spot, major cloud bands, and even the shadows of its Galilean moons during transits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the VX8 require a coma corrector for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, like all fast Newtonian telescopes, the VX8 will exhibit coma, an optical aberration that makes stars at the edge of the field appear elongated. For serious astrophotography with modern sensors, using a high-quality coma corrector is essential to achieve sharp, round stars across the entire image frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Zygo interferometer report included with the VX8 tell me?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Zygo report is a certificate of optical quality for your specific mirror. It provides a detailed map of the mirror's surface and quantifies its accuracy, including the final Peak-to-Valley (PV) wavefront error. This document is your proof that the optics meet or exceed the advertised specification (e.g., \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e), providing confidence that you have received a genuinely high-quality, hand-finished mirror.\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\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e900mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront (optional upgrades to 1\/8 PV and 1\/10 PV Ultra)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e63mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e7kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e860mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e225mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003e9-point CNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" focuser with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eFan\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":"Professional (1\/6 PV)","offer_id":52942642479389,"sku":"OOUK-VX8","price":1688.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942642512157,"sku":"OOUK-VX8-1-8-PV-OPTICS","price":1802.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942642544925,"sku":"OOUK-VX8-1-10-PV-OPTICS","price":1833.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX8-Optical-Tube-Assembly-1_2a3b5723-03fc-491b-8771-1402fd3063fc.jpg?v=1789608530"},{"product_id":"orion-optics-uk-vx8l","title":"Orion Optics UK VX8L Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e200mm Primary Mirror Diameter\u003c\/li\u003e\n\u003cli\u003e1200mm Focal Length (f\/6)\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV Wavefront Optics\u003c\/li\u003e\n\u003cli\u003e8kg Nominal Tube Weight\u003c\/li\u003e\n\u003cli\u003eCNC 9-Point Mirror Cell with Cooling Fan\u003c\/li\u003e\n\u003cli\u003e2\" Focuser with Reduction Gearing\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\u003eVX8L Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX8L Optical Tube Assembly pairs a 200mm primary mirror with a 1200mm (f\/6) focal length, delivering high-resolution views in a lightweight 8kg package. Every VX8L is built around a primary mirror hand-figured to a guaranteed 1\/6 PV wavefront accuracy, a standard verified by Zygo interferometer testing. The OTA's physical design includes a 1130mm long aluminum tube, a 50mm secondary mirror, and a CNC-machined 9-point mirror cell for exceptional optical stability.\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\u003eGuaranteed 1\/6 PV Wavefront Optics: The Orion Optics UK Standard\u003c\/h3\u003e\n\u003cp\u003eUnlike mass-produced instruments, the VX8L's primary mirror is certified to a minimum 1\/6 PV wavefront accuracy. This figure isn't an estimate; it's a measured value from a Zygo laser interferometer, with the report supplied for your specific optic. This level of precision ensures that the light cone converges more accurately, translating directly into higher contrast on planetary details, tighter star points, and the ability to resolve finer structures in nebulae and galaxies.\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 for Stability: A 9-Point Cell and 8kg Aluminium Tube\u003c\/h3\u003e\n\u003cp\u003eThe 200mm primary mirror rests on a CNC-machined 9-point flotation cell, which distributes the mirror's weight evenly to prevent sagging and induced astigmatism as the telescope moves. An integrated cooling fan accelerates thermal equilibrium, reducing tube currents for steadier views. At a nominal weight of just 8kg, the 1130mm aluminum tube is manageable for a wide range of equatorial mounts, offering significant aperture without requiring a massive support system.\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\u003ePrecision Focusing: A 2\" Focuser with Reduction Gearing\u003c\/h3\u003e\n\u003cp\u003eThe VX8L is equipped with a 2\" focuser featuring reduction gearing, allowing for both coarse and fine focus adjustments. This dual-speed control is critical for achieving sharp focus at high magnifications on planetary targets or when using a camera for astrophotography. The larger 2\" barrel accommodates wide-field eyepieces for sweeping views of star fields, and an included adapter steps down to fit standard 1.25\" accessories.\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\u003eChoosing Your Optical Grade: 1\/6 PV vs. 1\/8 PV and 1\/10 PV Ultra\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV optic delivers superb performance, Orion Optics UK offers optional upgrades for the most demanding observers. The choice depends entirely on your primary observing goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV (Standard):\u003c\/strong\u003e An excellent all-around performer providing sharp, high-contrast images that surpass standard commercial optics. It is more than sufficient for detailed visual observation and most deep-sky imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV (Professional):\u003c\/strong\u003e This grade offers a noticeable improvement in subtle planetary and lunar detail. The increase in wavefront accuracy results in higher contrast, making it easier to see faint cloud bands on Jupiter or delicate rilles on the Moon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV (Ultra):\u003c\/strong\u003e The ultimate in optical precision. This grade is for dedicated planetary imagers and visual observers seeking to extract every last detail the 200mm aperture can resolve. The near-perfect wavefront minimizes light scatter, producing the highest possible contrast and image sharpness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 does \"1\/6 PV wavefront\" mean for my views with the VX8L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003e1\/6 PV wavefront\u003c\/strong\u003e refers to the Peak-to-Valley error of the optical surface, measured against a perfect theoretical curve. A smaller fraction indicates a more accurate mirror. This high standard, verified by a Zygo interferometer, ensures that the VX8L produces sharper stars and higher image contrast compared to typical mass-produced telescopes that do not specify a wavefront error guarantee.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the VX8L's f\/6 focal ratio perform on large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 1200mm focal length at f\/6 provides a versatile field of view. With a low-power 2\" eyepiece, you can easily frame large objects like the Andromeda Galaxy (M31) or the Orion Nebula (M42). While not as wide as a short-tube refractor, the f\/6 ratio offers a good balance, providing enough magnification to resolve details in galaxies and nebulae without making the field of view too restrictive.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I consider upgrading the VX8L to 1\/8 PV or 1\/10 PV optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should consider an upgrade if your primary focus is high-resolution planetary or lunar observing and imaging. While the standard 1\/6 PV optic is excellent, the \u003cstrong\u003e1\/8 PV\u003c\/strong\u003e and \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e upgrades provide a measurable increase in contrast and sharpness. This allows you to resolve finer details like Jupiter's cloud belts, the Cassini Division in Saturn's rings, or subtle lunar rilles more clearly, especially during nights of good seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow heavy is the VX8L OTA, and what kind of mount do I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX8L optical tube has a nominal weight of \u003cstrong\u003e8kg\u003c\/strong\u003e. This makes it compatible with mid-range equatorial mounts rated for payloads of approximately 13kg (28 lbs) or more, such as a Sky-Watcher HEQ5 or Celestron AVX. This relatively low weight for a 200mm Newtonian makes it a portable and accessible option for many amateur astronomers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the benefits of the 9-point mirror cell in the VX8L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eCNC 9-point mirror cell\u003c\/strong\u003e provides uniform support for the 200mm primary mirror. This prevents the glass from flexing under its own weight as the telescope's orientation changes, which would otherwise introduce optical distortions like astigmatism. This robust support system is critical for maintaining the high-quality images the hand-figured optics are capable of producing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the VX8L resolve fine detail on planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The combination of a 200mm aperture and guaranteed 1\/6 PV optics makes the VX8L an excellent planetary instrument. At its 1200mm focal length, using a quality Barlow lens and eyepiece will allow you to push magnification to see details like Jupiter's Great Red Spot, shadow transits of its moons, and multiple cloud bands, assuming steady atmospheric 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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optics Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptics Upgrade Options\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" focuser with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC 9 point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e225mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1130mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e8kg (nominal)\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":"Professional (1\/6 PV)","offer_id":52942643593501,"sku":"OOUK-VX8L","price":1688.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942643626269,"sku":"OOUK-VX8L-1-8-PV-OPTICS","price":1802.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942643659037,"sku":"OOUK-VX8L-1-10-PV-OPTICS","price":1833.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX8-Optical-Tube-Assembly-1_ce5fff43-7f0e-4534-8efc-d1424a5f8853.jpg?v=1789608540"},{"product_id":"orion-optics-uk-vx10","title":"Orion Optics UK VX10 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e250mm (10\") Primary Mirror Diameter\u003c\/li\u003e\n\u003cli\u003e1200mm Nominal Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.8 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV Wavefront Optics\u003c\/li\u003e\n\u003cli\u003e11kg Nominal Tube Weight\u003c\/li\u003e\n\u003cli\u003eCNC 9-Point Mirror Cell with Cooling Fan\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\u003eOrion Optics UK VX10 Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX10 Optical Tube Assembly delivers serious deep-sky and planetary capability, built around a hand-figured 250mm primary mirror with a guaranteed 1\/6 PV wavefront accuracy. Its fast f\/4.8 focal ratio and 1200mm focal length provide a wide field of view for imaging nebulae, while the entire aluminium tube weighs a manageable 11kg. Support for the primary is provided by a CNC-machined 9-point cell, ensuring optical stability as you move across the 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\u003e250mm Aperture at a Fast f\/4.8\u003c\/h3\u003e\n\u003cp\u003eWith a 250mm (10-inch) primary mirror, the VX10 gathers enough light to resolve faint galaxy arms and dust lanes in nebulae from a dark sky site. The 1200mm focal length and f\/4.8 ratio create a bright image plane and a wide true field of view, allowing you to frame large targets like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000) with a suitable wide-field eyepiece or camera sensor. The 63mm secondary mirror provides even illumination for many popular imaging sensors, though for astrophotography, a coma corrector is recommended to achieve pinpoint stars across the entire field of this fast optical system.\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\u003e1\/6 PV Wavefront Accuracy with Zygo-Verified Upgrades\u003c\/h3\u003e\n\u003cp\u003eEvery VX10 includes a primary mirror hand-figured in the UK to a minimum standard of 1\/6 PV wavefront accuracy, a grade many manufacturers consider premium. This precision ensures sharp, high-contrast views, especially noticeable during high-magnification observations of planets and the Moon. Each optic is certified with a Zygo laser interferometer report.\u003c\/p\u003e\n\u003cp\u003eFor those seeking the highest possible resolution, the VX10 offers optional upgrades to 1\/8 PV (Research Grade) or 1\/10 PV (Ultra) optics. Moving to a higher grade minimizes the peak-to-valley wavefront error, translating directly to finer detail resolution on challenging targets like Jupiter's cloud bands or Cassini's Division in Saturn's rings under steady seeing conditions.\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\u003eAn 11kg Tube with a 9-Point Mirror Cell\u003c\/h3\u003e\n\u003cp\u003eThe VX10's engineering focuses on thermal and mechanical stability without excessive weight. The aluminium tube, measuring 1140mm long and 280mm in diameter, brings the total OTA weight to a nominal 11kg, making it compatible with a wide range of equatorial mounts in the EQ6 class. The primary mirror is supported by a CNC-machined 9-point flotation cell that prevents flexure, and an integrated cooling fan helps the mirror reach ambient temperature quickly for stable, sharp images. A 2\" focuser with reduction gearing is fitted for precise, repeatable focusing, critical for both visual observation and imaging.\u003c\/p\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 does \"1\/6 PV wavefront\" mean for the Orion Optics UK VX10?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003ePV wavefront\u003c\/strong\u003e measures the peak-to-valley error of the mirror's surface compared to a perfect parabola. A smaller fraction indicates a more accurate mirror. The VX10's standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e is a high-performance specification that ensures sharp, high-contrast images, exceeding the \"diffraction-limited\" standard of 1\/4 PV used by many mass-producers. Every Orion Optics UK mirror is supplied with a Zygo interferometer test report to certify its quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it worth upgrading the VX10 optics to 1\/8 PV or 1\/10 PV?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor visual observers and imagers focused on planetary detail, the upgrade is significant. While the standard 1\/6 PV optic is excellent, moving to \u003cstrong\u003e1\/8 PV (Research Grade)\u003c\/strong\u003e or \u003cstrong\u003e1\/10 PV (Ultra Grade)\u003c\/strong\u003e provides a noticeable increase in image contrast and the ability to resolve finer details under good seeing conditions. If your primary goal is capturing the subtlest features on Jupiter, Saturn, or Mars, the higher-grade optics will deliver superior results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the 11kg VX10 OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a nominal tube weight of \u003cstrong\u003e11kg\u003c\/strong\u003e, the VX10 optical tube requires a sturdy equatorial mount. For visual use, a mount in the EQ5\/CG-5 class might suffice, but for astrophotography, a mount with a higher payload capacity like a Sky-Watcher EQ6-R Pro, Celestron CGEM II, or similar is strongly recommended to handle the OTA's weight and 1140mm length, ensuring stability and tracking accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the VX10's f\/4.8 focal ratio affect imaging of the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ef\/4.8\u003c\/strong\u003e focal ratio is considered fast, which is a major advantage for deep-sky imaging. It allows you to collect a strong signal on faint objects like the Orion Nebula (M42) with shorter sub-exposure times compared to a slower f\/8 or f\/10 system. This reduces demands on your mount's tracking and allows you to capture more data in a single session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I see a difference between the VX10 optical grades on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, assuming good atmospheric seeing. While the standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic will show Jupiter's main cloud belts and the Great Red Spot clearly, upgrading to \u003cstrong\u003e1\/8 PV\u003c\/strong\u003e or \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e allows the telescope to resolve finer, lower-contrast details. This includes smaller storms, subtle shading differences within the belts, and intricate festoons. The more perfect the mirror's surface, the less light scatters, resulting in a higher-contrast image that holds up better at very high magnifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is included with the Orion Optics UK VX10 tube assembly?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX10 optical tube assembly is fitted with a \u003cstrong\u003e2\" focuser with reduction gearing\u003c\/strong\u003e and a 9-point mirror cell with a cooling fan. Please note that accessories such as eyepieces, a finder scope, and mounting rings are typically sold separately to allow you to configure the telescope to your specific needs.\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\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Upgrades\u003c\/td\u003e\n\u003ctd\u003eOptional 1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e63mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e11kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1140mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e280mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC 9-point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\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":"Professional (1\/6 PV)","offer_id":52942644674845,"sku":"OOUK-VX10","price":2245.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942644707613,"sku":"OOUK-VX10-1-8-PV-OPTICS","price":2380.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942644740381,"sku":"OOUK-VX10-1-10-PV-OPTICS","price":2483.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX10-Optical-Tube-Assembly-1_1ea36d66-29a1-45c5-a0ed-5af5252af4f9.jpg?v=1789608549"},{"product_id":"orion-optics-uk-vx10l","title":"Orion Optics UK VX10L Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e250mm (10-inch) primary mirror for exceptional light-gathering\u003c\/li\u003e\n\u003cli\u003e1600mm focal length at f\/6.3, ideal for both planetary and deep-sky observation\u003c\/li\u003e\n\u003cli\u003eStandard hand-figured optics with a 1\/6 PV wavefront accuracy\u003c\/li\u003e\n\u003cli\u003eLightweight 12kg aluminium tube for easier mounting and transport\u003c\/li\u003e\n\u003cli\u003eCNC-machined 9-point mirror cell with integrated cooling fan\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\u003eOrion Optics UK VX10L Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX10L delivers high-resolution performance through its 250mm primary mirror and 1600mm (f\/6.3) focal length. Every VX10L is built around hand-figured optics certified to a minimum 1\/6 PV wavefront accuracy, supported by a 9-point CNC-machined mirror cell for consistent optical alignment. The entire assembly weighs a manageable 12kg, thanks to its 1550mm aluminium tube, making it compatible with a wide range of equatorial mounts.\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\u003e250mm f\/6.3 Optics: The Foundation for High-Resolution Views\u003c\/h3\u003e\n\u003cp\u003eWith a 250mm (10-inch) aperture, the VX10L gathers enough light to resolve faint galaxies and bring out fine detail in nebulae like the Orion Nebula (M42). The 1600mm focal length and f\/6.3 focal ratio provide a versatile balance, offering enough image scale for high-magnification views of Jupiter's cloud bands and Saturn's rings, while remaining wide enough for framing larger deep-sky targets.\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\u003e1\/6 PV to 1\/10 PV: Choosing Your Level of Optical Precision\u003c\/h3\u003e\n\u003cp\u003eOrion Optics UK hand-figures every mirror to a verified peak-to-valley (PV) wavefront accuracy, measured with a Zygo laser interferometer. The standard VX10L includes 1\/6 PV optics, a grade that already surpasses mass-produced alternatives and delivers sharp, high-contrast images. For the most demanding applications, optional upgrades to 1\/8 PV or 1\/10 PV Ultra are available.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV (Professional Grade):\u003c\/strong\u003e The standard offering, providing excellent views for all astronomical subjects with noticeably higher contrast than typical commercial newtonians.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV (Research Grade):\u003c\/strong\u003e A significant step up, this grade minimizes wavefront error to a level where planetary and lunar details become crisper and more stable, especially during moments of good seeing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV (Ultra Grade):\u003c\/strong\u003e The highest level of correction available. This grade ensures the optical system is performing at the theoretical limit, extracting the maximum possible detail and contrast from any target.\u003c\/li\u003e\n\u003c\/ul\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 for Stability: 12kg Tube and 9-Point CNC Mirror Cell\u003c\/h3\u003e\n\u003cp\u003eThe VX10L's mechanical design ensures its optics perform consistently. The primary mirror rests on a 9-point flotation cell, precision-machined from CNC aluminum to distribute the mirror's weight evenly and prevent surface distortion. An integrated cooling fan helps the 250mm mirror reach thermal equilibrium with the ambient air quickly, reducing tube currents and sharpening the image.\u003c\/p\u003e\n\u003cp\u003eDespite its 1550mm length, the aluminium tube keeps the total weight to just 12kg, placing it within the capacity of many mid-range equatorial mounts. Focusing is managed by a 2\" focuser with reduction gearing, allowing for fine, precise adjustments critical for high-magnification visual work and astrophotography.\u003c\/p\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 visible difference between the 1\/6 PV and 1\/10 PV optics on the VX10L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optics provide excellent, sharp views, upgrading to \u003cstrong\u003e1\/10 PV Ultra\u003c\/strong\u003e optics on the Orion Optics UK VX10L yields a noticeable increase in contrast and fine detail, particularly on high-magnification targets like planets and the Moon. You'll observe subtler cloud bands on Jupiter, finer detail in Saturn's rings, and sharper resolution on close double stars. Each mirror grade comes with a Zygo interferometer test report verifying its accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Orion Optics UK VX10L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX10L OTA weighs \u003cstrong\u003e12kg\u003c\/strong\u003e. For visual use, a mount with a payload capacity of at least 15-18kg (e.g., Sky-Watcher EQ6-R Pro) is recommended to ensure stability. For long-exposure astrophotography, a mount with a higher capacity of 20kg or more would be ideal to handle the additional weight of a camera, guide scope, and other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the VX10L's f\/6.3 focal ratio affect astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ef\/6.3\u003c\/strong\u003e focal ratio is a versatile middle ground. It's fast enough to capture significant data on deep-sky objects in a reasonable amount of time without requiring the extreme precision of faster f\/4 systems. It also provides a \u003cstrong\u003e1600mm\u003c\/strong\u003e focal length, which gives good image scale for smaller galaxies and planetary nebulae without needing aggressive barlows or powermates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the VX10L with standard 1\/6 PV optics good enough for resolving the Cassini Division on Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The \u003cstrong\u003e250mm\u003c\/strong\u003e aperture of the VX10L provides more than enough resolving power to see the Cassini Division. The standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optics will deliver a sharp enough image to clearly define the gap in Saturn's rings, provided atmospheric seeing conditions are favorable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the cooling fan on the VX10L's mirror cell important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fan helps the large \u003cstrong\u003e250mm\u003c\/strong\u003e primary mirror cool down to the ambient nighttime temperature more quickly. This minimizes \"tube currents\"—thermals rising from a warm mirror—which distort the view and soften the image. Using the fan for 20-30 minutes before observing ensures you get the sharpest possible views from the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see detail in the spiral arms of the Whirlpool Galaxy (M51) with the Orion Optics UK VX10L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Under dark skies, the \u003cstrong\u003e250mm\u003c\/strong\u003e aperture of the VX10L is capable of resolving the spiral structure of brighter galaxies like M51. The high-contrast optics, especially the \u003cstrong\u003e1\/8 PV\u003c\/strong\u003e or \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e upgrades, will make this structure more apparent, revealing the bridge of stars connecting M51 to its companion galaxy, NGC 5195.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e250mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/6.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV Wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Optical Upgrades\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC Machined 9-Point Suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e12kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1550mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e280mm\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":"Professional (1\/6 PV)","offer_id":52942645788957,"sku":"OOUK-VX10L","price":2245.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942645821725,"sku":"OOUK-VX10L-1-8-PV-OPTICS","price":2380.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942645854493,"sku":"OOUK-VX10L-1-10-PV-OPTICS","price":2483.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX10-Optical-Tube-Assembly-1_e975d474-4065-4dc6-b476-1f246dc63a7c.jpg?v=1789608559"},{"product_id":"orion-optics-uk-vx12","title":"Orion Optics UK VX12 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e300mm (12\") primary mirror diameter\u003c\/li\u003e\n\u003cli\u003e1200mm nominal focal length\u003c\/li\u003e\n\u003cli\u003eFast f\/4 focal ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV wavefront optical grade\u003c\/li\u003e\n\u003cli\u003eLightweight 14kg aluminium tube\u003c\/li\u003e\n\u003cli\u003eCNC-machined 9-point mirror cell with cooling fan\u003c\/li\u003e\n\u003cli\u003e2\" focuser with reduction gearing\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\u003eOrion Optics UK VX12 Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX12 combines a large 300mm aperture with a fast f\/4 focal ratio, delivering exceptional light-gathering power for deep-sky imaging. Its 1200mm focal length is supported by a primary mirror hand-figured to a 1\/6 PV wavefront standard, ensuring high-contrast views. The entire optical tube weighs a manageable 14kg thanks to its aluminium construction, while the 9-point CNC mirror cell provides rigid, stable support for the primary optics.\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\u003eThe 300mm f\/4 Primary: Hand-Figured 1\/6 PV Optics\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the VX12 is a 300mm parabolic primary mirror, engineered for serious imaging. The fast f\/4 focal ratio dramatically reduces exposure times, allowing you to capture faint details in galaxies and nebulae more efficiently. Every VX12 mirror is hand-finished and tested on a Zygo interferometer to guarantee its stated optical quality, with the standard 1\/6 PV wavefront grade delivering sharp, high-contrast images that outperform mass-produced alternatives.\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\u003eVX12 Mechanical Systems: A 14kg OTA with 9-Point Mirror Support\u003c\/h3\u003e\n\u003cp\u003eThe VX12 is built for stability without excessive weight. The 1160mm aluminium tube keeps the assembly at a nominal 14kg, making it compatible with a wide range of mid-to-heavy-duty equatorial mounts. Inside, the primary mirror rests on a CNC-machined 9-point flotation cell that distributes its weight evenly, preventing flexure and preserving optical alignment. An integrated cooling fan accelerates thermal equilibrium, reducing tube currents and ensuring your telescope is ready for imaging sooner.\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\u003eDesigned for Imaging: 2\" Focuser and Fast f\/4 Focal Ratio\u003c\/h3\u003e\n\u003cp\u003eEvery component of the VX12 is selected to support astrophotography. The 2\" focuser includes reduction gearing, providing the fine control needed to achieve critical focus with a modern CMOS or CCD camera. The 75mm secondary mirror is sized to provide ample illumination for larger sensors, minimizing vignetting across the field. This combination makes the VX12 a powerful light-gathering instrument for capturing everything from wide-field nebulae to distant galaxy clusters.\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\u003eChoosing Your Optical Grade: 1\/6 PV vs. 1\/10 PV Ultra Optics\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV wavefront optic is an excellent performer, Orion Optics UK offers upgrades for the most demanding applications. A higher-grade mirror concentrates more light into the central Airy disk, resulting in visibly higher contrast, especially on fine planetary detail. This is a direct trade-off between cost and optical perfection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV (Professional Grade):\u003c\/strong\u003e The standard option, providing excellent, sharp images for both deep-sky and planetary work. A significant step up from typical commercial optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV (Research Grade):\u003c\/strong\u003e A premium upgrade for those seeking finer detail. You will notice improved contrast on features like Jupiter's cloud bands and the Cassini Division in Saturn's rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV (Ultra Grade):\u003c\/strong\u003e The highest level of correction available. This grade ensures the optical system is performing at the theoretical limit, revealing the most subtle details the atmosphere and your seeing conditions will allow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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\"\u003eFor planetary imaging of Jupiter with the VX12, is the 1\/10 PV Ultra upgrade worth it?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for dedicated planetary imagers, the 1\/10 PV Ultra upgrade makes a noticeable difference. The higher wavefront accuracy increases contrast, which is critical for resolving fine, low-contrast details like small ovals, festoons in Jupiter's cloud belts, and subtle lunar rilles. While the standard 1\/6 PV optic is very capable, the 1\/10 PV ensures you are capturing the maximum possible detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the f\/4 focal ratio of the VX12 affect imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast f\/4 ratio is a major advantage for targets like the Orion Nebula (M42). Compared to an f\/8 system, the VX12 gathers light four times faster, meaning you can achieve the same signal-to-noise ratio in a fraction of the time. This allows for shorter individual sub-exposures, which can reduce guiding errors and capture the faint outer nebulosity more effectively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the standard 1\/6 PV wavefront accuracy of the VX12 mean in practice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 1\/6 PV (Peak-to-Valley) wavefront error means the mirror surface deviates from a perfect parabola by no more than one-sixth the wavelength of light. This is a high standard that results in sharp, high-contrast images with tightly focused stars. It significantly exceeds the \"diffraction-limited\" standard (1\/4 PV) used as a benchmark for quality optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the VX12's 14kg tube weight suitable for a mid-range equatorial mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe nominal 14kg weight of the VX12 OTA is at the upper end for many mid-range mounts when used for imaging. While a mount rated for 20kg (44 lbs) might carry it visually, for astrophotography you must also account for the weight of your camera, guide scope, and other accessories. A mount in the 25-30kg (55-66 lb) payload class is recommended for stable, long-exposure imaging with the VX12.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Orion Optics UK VX12 include a cooling fan?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe integrated fan on the primary mirror cell is essential for reaching thermal equilibrium. A large 300mm mirror can take a long time to cool to the ambient night air temperature. The fan accelerates this process, which minimizes \"tube currents\"—internal air turbulence that can distort the image and reduce sharpness. Using the fan for 30-60 minutes before observing or imaging ensures the best possible performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need a coma corrector with the f\/4 VX12 for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for astrophotography with the f\/4 VX12, a coma corrector is essential. All fast Newtonian telescopes naturally exhibit coma, an aberration that makes stars at the edge of the field of view appear elongated. A high-quality coma corrector will ensure sharp, point-like stars across the entire frame, which is critical when using cameras with medium to large sensors.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1200mm (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Grade Upgrades\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC machined 9-point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e14kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e326mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1160mm\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\"\u003eVX12 Optical Tube Assembly\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":"Professional (1\/6 PV)","offer_id":52942646870301,"sku":"OOUK-VX12","price":2993.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942646903069,"sku":"OOUK-VX12-1-8-PV-OPTICS","price":3179.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942646935837,"sku":"OOUK-VX12-1-10-PV-OPTICS","price":3376.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX12-Optical-Tube-Assembly-1_0749119e-f132-4b84-8ff2-0e78ded69e31.jpg?v=1789608568"},{"product_id":"orion-optics-uk-vx12l","title":"Orion Optics UK VX12L Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e300mm (12\") Primary Mirror\u003c\/li\u003e\n\u003cli\u003e1600mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/5.3 Focal Ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV Wavefront Hand-Figured Optics\u003c\/li\u003e\n\u003cli\u003eCNC-Machined 9-Point Mirror Cell with Cooling Fan\u003c\/li\u003e\n\u003cli\u003e16kg Nominal Tube Weight\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\u003eOrion Optics UK VX12L Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX12L combines a large 300mm aperture with a 1600mm focal length in a versatile f\/5.3 Newtonian design. This optical tube is built around a hand-figured primary mirror guaranteed to a 1\/6 PV wavefront accuracy, with each optic verified by a Zygo interferometer report. Weighing a manageable 16kg for its size, the aluminium tube is supported by a CNC-machined 9-point mirror cell designed for stable, high-contrast 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\u003eHand-Figured 1\/6 PV Primary Mirror: Zygo-Verified Precision\u003c\/h3\u003e\n\u003cp\u003eThe heart of the VX12L is its 300mm primary mirror, which is hand-finished in the UK to a minimum 1\/6 Peak-to-Valley (PV) wavefront accuracy. This standard is significantly higher than typical mass-produced optics and ensures sharp, high-contrast views. Every mirror is tested on a Zygo laser interferometer, the same equipment used in professional optical labs, and is supplied with its own test report to certify its quality.\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\u003eThe VX12L's 9-Point Cell and Active Cooling System\u003c\/h3\u003e\n\u003cp\u003eTo maintain optical alignment and performance, the 300mm mirror is supported by a computer-optimized, CNC-machined 9-point flotation cell. This cell distributes the mirror's weight evenly, preventing astigmatism and other distortions as the telescope moves. An integrated cooling fan accelerates thermal equilibrium, reducing tube currents and ensuring the sharpest possible images from the start of your session.\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\u003eImaging with a 300mm f\/5.3 Newtonian\u003c\/h3\u003e\n\u003cp\u003eWith its 300mm aperture, the VX12L gathers a tremendous amount of light, resolving faint details in distant galaxies and nebulae. The 1600mm focal length provides the image scale needed for detailed views of the Moon and planets, while the f\/5.3 focal ratio is fast enough to capture deep-sky objects with reasonably short exposure times. The instrument includes a 2\" focuser with reduction gearing for the fine adjustments necessary to achieve critical focus, especially for astrophotography.\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\u003eChoosing Your Optical Grade: 1\/6 PV vs. 1\/8 PV and 1\/10 PV Ultra\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV optic delivers excellent images, Orion Optics UK offers upgrades for the most demanding observers. Moving to a 1\/8 PV or 1\/10 PV 'Ultra' mirror provides a tangible increase in image fidelity, most noticeable during high-magnification planetary viewing. A more accurate wavefront concentrates more light into the central Airy disk, resulting in higher contrast on subtle details like Jupiter's cloud bands or the Cassini Division in Saturn's rings under steady seeing conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV (Standard):\u003c\/strong\u003e An excellent all-around choice for visual and imaging, far exceeding the quality of standard commercial telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV (Professional):\u003c\/strong\u003e A noticeable step up for dedicated lunar and planetary observers, delivering higher contrast and finer detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV (Ultra):\u003c\/strong\u003e The ultimate in optical precision, for those seeking to extract every last bit of resolution possible from a 300mm aperture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 real-world difference between the 1\/6 PV, 1\/8 PV, and 1\/10 PV optics on the VX12L?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe difference is most apparent at high magnification on high-contrast targets. While the \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic provides excellent, sharp views, upgrading to \u003cstrong\u003e1\/8 PV\u003c\/strong\u003e or \u003cstrong\u003e1\/10 PV\u003c\/strong\u003e increases image contrast and stability. You'll notice finer details on planets, tighter star points, and better resolution of close double stars. The 1\/10 PV 'Ultra' grade represents the practical limit of hand-figuring, ensuring the image is limited by atmospheric seeing, not the mirror itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the VX12L perform on a target like the Orion Nebula (M42) at f\/5.3?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Orion Optics UK VX12L is an exceptional instrument for large, bright nebulae like M42. The \u003cstrong\u003e300mm aperture\u003c\/strong\u003e gathers enough light to reveal faint outer loops and intricate detail within the Trapezium region. The \u003cstrong\u003ef\/5.3\u003c\/strong\u003e focal ratio provides a wide field of view with a coma corrector, allowing you to frame the entire nebula while being fast enough for efficient imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the VX12L resolve details like the Cassini Division on Saturn with the standard 1\/6 PV optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The \u003cstrong\u003e300mm aperture\u003c\/strong\u003e has more than enough theoretical resolution to easily show the Cassini Division, and the guaranteed \u003cstrong\u003e1\/6 PV wavefront\u003c\/strong\u003e quality of the standard optics ensures the telescope can deliver that resolution in practice. Seeing conditions will be the limiting factor, but on a steady night, the VX12L will provide sharp, detailed views of Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the VX12L's 9-point mirror cell protect the optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eCNC-machined 9-point cell\u003c\/strong\u003e provides uniform support for the 300mm primary mirror across its entire surface. This prevents the mirror from sagging under its own weight as the telescope points to different parts of the sky, which would otherwise induce astigmatism and degrade the image. This precise support is critical for maintaining the mirror's hand-figured accuracy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 16kg weight of the VX12L manageable for portable setups?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt \u003cstrong\u003e16kg\u003c\/strong\u003e, the VX12L optical tube is relatively lightweight for a 12\" Newtonian, thanks to its aluminium construction. While not a grab-and-go instrument, it can be transported and set up by one person. It requires a substantial equatorial mount (EQ6-R Pro class or larger) to carry it effectively for visual use or astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the Orion Optics UK VX12L OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDue to its \u003cstrong\u003e16kg weight\u003c\/strong\u003e and \u003cstrong\u003e1510mm length\u003c\/strong\u003e, the VX12L requires a heavy-duty equatorial mount. For visual observing, a mount with a payload capacity of at least 20kg (44 lbs) is recommended. For astrophotography, a mount with an even higher capacity, such as a Sky-Watcher EQ8-R Pro or similar, is necessary to ensure stability and precise tracking.\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\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e300mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optical Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Upgrade Options\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e63mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC 9 point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e16kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e326mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1510mm\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":"Professional (1\/6 PV)","offer_id":52942648017181,"sku":"OOUK-VX12L","price":2993.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942648049949,"sku":"OOUK-VX12L-1-8-PV-OPTICS","price":3179.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942648082717,"sku":"OOUK-VX12L-1-10-PV-OPTICS","price":3376.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/OrionOpticsUK-VX12-Optical-Tube-Assembly-1_82cb4f44-7966-4c8c-be76-70b036828933.jpg?v=1789608578"},{"product_id":"orion-optics-uk-vx14","title":"Orion Optics UK VX14 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e350mm (14\") primary mirror diameter\u003c\/li\u003e\n\u003cli\u003e1600mm nominal focal length\u003c\/li\u003e\n\u003cli\u003eFast f\/4.6 focal ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV wavefront optical accuracy, certified by Zygo report\u003c\/li\u003e\n\u003cli\u003e9-point CNC-machined mirror cell\u003c\/li\u003e\n\u003cli\u003e2\" focuser with reduction gearing\u003c\/li\u003e\n\u003cli\u003eOnboard fan for rapid mirror cooling\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\u003eOrion Optics UK VX14 Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX14 Optical Tube Assembly combines a massive 350mm aperture with a fast f\/4.6 focal ratio for breathtaking deep-sky imaging and high-resolution planetary views. Its 1600mm focal length is built around a primary mirror hand-figured to a standard 1\/6 PV wavefront accuracy, with each unit verified by a Zygo interferometer report. The entire assembly weighs a manageable 22kg, housed in a 1540mm aluminium tube equipped with a 9-point CNC mirror cell and an integrated cooling fan for thermal stability.\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\u003eThe 350mm f\/4.6 Primary Mirror: 1\/6 PV Wavefront Accuracy\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the VX14 is a hand-finished 350mm primary mirror, delivering the light-gathering power needed to resolve faint details in distant galaxies and nebulae. The f\/4.6 focal ratio provides a wide field of view and reduces exposure times for astrophotography. Every VX14 is guaranteed to have a minimum optical quality of 1\/6 PV wavefront, ensuring sharp, high-contrast images free from the aberrations common in mass-produced optics.\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\u003e9-Point CNC Cell and Active Cooling in a 22kg Tube\u003c\/h3\u003e\n\u003cp\u003eA mirror of this size requires exceptional support to maintain its figure. The VX14 uses a CNC-machined 9-point flotation cell that distributes the mirror's weight evenly, preventing flexure and preserving optical alignment as the telescope moves. An integrated cooling fan accelerates thermal equilibrium, reducing mirror-induced air currents and stabilizing the image much faster than a passive system. These components are housed in a rigid, 385mm diameter aluminium tube, keeping the total OTA weight to 22kg.\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\u003eImaging-Ready 2\" Focuser with Reduction Gearing\u003c\/h3\u003e\n\u003cp\u003eThe VX14 is equipped with a robust 2\" focuser featuring reduction gearing, allowing for precise, minute adjustments critical for achieving sharp focus, especially with the fast f\/4.6 optical system. This is essential for both high-magnification visual work and astrophotography where critical focus is non-negotiable. The large 2\" barrel accommodates wide-field eyepieces and modern imaging cameras without vignetting.\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\u003eVX14 Optical Grades Explained: 1\/6 PV vs. 1\/8 PV vs. 1\/10 PV Ultra\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV wavefront optics deliver exceptional views, Orion Optics UK offers two higher grades for the most demanding observers. The choice depends entirely on your primary targets and observing goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV Wavefront (Professional):\u003c\/strong\u003e This grade provides excellent, sharp images across all astronomical targets. It is a significant step up from typical commercial telescopes and is ideal for deep-sky imaging and general observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV Wavefront (Research):\u003c\/strong\u003e The upgrade to 1\/8 PV offers a noticeable increase in contrast and fine detail, particularly on the Moon and planets. Faint planetary details like Jupiter's cloud festoons and the Cassini Division in Saturn's rings become more distinct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV Wavefront (Ultra):\u003c\/strong\u003e Representing the pinnacle of Newtonian optics, the 1\/10 PV Ultra grade delivers the highest possible contrast and resolution. This level of correction allows the telescope to perform at its theoretical limit, revealing the most subtle planetary and lunar features the atmosphere will allow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 class of mount is required for the VX14 OTA's 22kg weight?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith a tube weight of \u003cstrong\u003e22kg (approx. 48.5 lbs)\u003c\/strong\u003e, plus the weight of a finder, camera, and other accessories, you should use a mount with a payload capacity of at least 60-70 lbs for imaging. Mounts in the EQ8, Losmandy G11, or Paramount class are recommended to handle the VX14's weight and 1540mm length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the VX14's f\/4.6 focal ratio good for imaging galaxies like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003ef\/4.6 focal ratio\u003c\/strong\u003e is excellent for imaging large deep-sky objects like the Andromeda Galaxy (M31). It allows you to collect a significant amount of light in a shorter time compared to slower f\/8 or f\/10 systems. For edge-to-edge sharp stars across a large sensor, pairing the VX14 with a high-quality coma corrector is essential.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the real difference I'll see between the standard 1\/6 PV and 1\/10 PV Ultra optics on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the standard \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic will show you Jupiter's main cloud belts and moons clearly, the \u003cstrong\u003e1\/10 PV Ultra\u003c\/strong\u003e upgrade provides a higher level of contrast and sharpness. This translates to seeing more subtle detail within the belts, smaller storms and ovals, and a more defined edge on the planet's limb, assuming seeing conditions are good.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 75mm secondary mirror on the VX14 cause a large obstruction?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e75mm secondary mirror\u003c\/strong\u003e results in a 21.4% central obstruction by diameter. This is a very reasonable figure for a fast f\/4.6 Newtonian designed for both visual and photographic use, balancing the need for a fully illuminated field for imaging with the desire for high contrast for visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the fan cooling on the VX14 improve my views?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe integrated \u003cstrong\u003ecooling fan\u003c\/strong\u003e helps the 350mm primary mirror reach the ambient nighttime temperature more quickly. This minimizes \"tube currents\"—warm air rising from the mirror—which can distort the image and make it look wavy, like viewing over hot pavement. The result is a steadier, sharper image sooner in your observing session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 1.25\" eyepieces with the VX14's 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003e2\" focuser with reduction gearing\u003c\/strong\u003e typically includes a 1.25\" adapter, allowing you to use both 2\" and 1.25\" format eyepieces and accessories. This gives you the flexibility to use a wide range of eyepieces for both wide-field and high-power views.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e350mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1600mm (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optics Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Optics Upgrades\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" focuser with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003eCNC 9-point suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eSolid Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e385mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1540mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e22kg (nominal)\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\"\u003eVX14 Optical Tube Assembly\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":"Professional (1\/6 PV)","offer_id":52942649032989,"sku":"OOUK-VX14","price":5539.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942649065757,"sku":"OOUK-VX14-1-8-PV-OPTICS","price":5705.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942649098525,"sku":"OOUK-VX14-1-10-PV-OPTICS","price":5953.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_f4f245fb-4910-45ed-91bf-b5a981d83f3d.jpg?v=1789608587"},{"product_id":"orion-optics-uk-vx16","title":"Orion Optics UK VX16 Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e400mm (16\") primary mirror diameter\u003c\/li\u003e\n\u003cli\u003e1600mm focal length at a fast f\/4 focal ratio\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV wavefront optics, Zygo-certified\u003c\/li\u003e\n\u003cli\u003e9-point CNC-machined mirror cell for optimal support\u003c\/li\u003e\n\u003cli\u003e29kg nominal tube weight in a rigid aluminium tube\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\u003eOrion Optics UK VX16 Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX16 Optical Tube Assembly combines a massive 400mm aperture with a fast f\/4 focal ratio, creating a powerful instrument for serious deep-sky imaging. Every VX16 is built around a hand-figured primary mirror with a certified standard accuracy of 1\/6 PV wavefront, delivering incredibly sharp, high-contrast views. The rigid aluminium tube weighs a manageable 29kg and houses the primary in a 9-point CNC-machined mirror cell, ensuring optical stability and rapid thermal equilibrium with its integrated cooling fan.\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\u003e400mm f\/4 Primary: Certified 1\/6 PV Wavefront Accuracy\u003c\/h3\u003e\n\u003cp\u003eThe heart of the VX16 is its 400mm, 1600mm focal length primary mirror. The fast f\/4 optical system gathers immense amounts of light, drastically reducing exposure times on faint nebulae and galaxies. Unlike mass-produced optics, each VX mirror is hand-finished and certified on a Zygo laser interferometer to a minimum standard of 1\/6 PV wavefront accuracy—a significant step up from the common 1\/4 PV \"diffraction-limited\" benchmark. This higher precision translates directly to sharper stars, finer detail, and higher contrast, with a certificate to prove it.\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\u003e29kg Aluminium Tube: 9-Point Cell and Active Cooling\u003c\/h3\u003e\n\u003cp\u003eOrion Optics UK engineered the VX16 for mechanical stability without excessive weight. The 29kg aluminium optical tube is rigid enough to handle large cameras and accessories while remaining manageable for heavy-duty equatorial mounts. To protect the primary mirror's performance, a CNC-machined 9-point flotation cell provides uniform support, preventing gravity-induced flexure that can harm image quality. An integrated cooling fan accelerates mirror acclimation, minimizing tube currents and ensuring your images are as sharp as the optics allow from the start of your session.\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\u003eChoosing Your Optics: 1\/6 PV Standard vs. the 1\/10 PV Ultra Upgrade\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV wavefront optics deliver exceptional views, the VX16 offers upgrades for the most demanding applications. Moving to 1\/8 PV or the pinnacle 1\/10 PV Ultra grade refines the optical surface to near-perfection. This obsessive level of accuracy yields the highest possible image contrast, critical for resolving subtle cloud bands on Jupiter, separating tight double stars, and capturing the faintest wisps of nebulosity. For planetary imagers or visual observers seeking the ultimate in sharpness, the 1\/10 PV Ultra upgrade transforms the VX16 into a truly world-class instrument.\u003c\/p\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 makes the VX16 Optical Tube Assembly ideal for deep-sky imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX16's combination of a huge \u003cstrong\u003e400mm (16\") aperture\u003c\/strong\u003e and a fast \u003cstrong\u003ef\/4 focal ratio\u003c\/strong\u003e allows it to collect a massive amount of light in a short time. This significantly reduces exposure times needed for faint targets like galaxies and nebulae, maximizing the data you can capture in a single night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the real-world difference between the 1\/6 PV and 1\/10 PV optics on the VX16?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe standard \u003cstrong\u003e1\/6 PV wavefront\u003c\/strong\u003e optics are excellent and provide very sharp images. Upgrading to \u003cstrong\u003e1\/10 PV Ultra\u003c\/strong\u003e provides a measurably more perfect optical surface. This translates to the highest possible image contrast, allowing you to resolve finer details on planets, split closer double stars, and discern more subtle structures in bright deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the VX16's f\/4 system perform when imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX16 is exceptionally well-suited for a target like the Orion Nebula (M42). Its \u003cstrong\u003e1600mm focal length\u003c\/strong\u003e provides a good image scale for the nebula's core, while the \u003cstrong\u003ef\/4 speed\u003c\/strong\u003e allows you to capture the faint outer loops of gas with relatively short sub-exposures, preserving detail in the bright Trapezium region without overexposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the cooling fan important for the VX16's 400mm mirror?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large 400mm mirror has significant thermal mass and can take a long time to cool to the ambient night air temperature. The included \u003cstrong\u003ecooling fan\u003c\/strong\u003e actively draws air over the back of the mirror, speeding up this process. This minimizes internal tube currents—a major source of image distortion—and ensures you get sharp, stable views much faster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the VX16 suitable for high-resolution planetary imaging of Jupiter with the 1\/10 PV upgrade?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. With the \u003cstrong\u003e1\/10 PV Ultra optics upgrade\u003c\/strong\u003e, the VX16 becomes a formidable planetary instrument. The near-perfect surface ensures maximum contrast, which is essential for resolving fine details like small ovals, festoons, and subtle color variations in Jupiter's cloud belts. Paired with a high-speed planetary camera and a Barlow lens, it can produce professional-level results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount is required for the 29kg VX16 OTA?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX16's \u003cstrong\u003e29kg tube weight\u003c\/strong\u003e, combined with the additional weight of a camera, finder, and guide scope, requires a very substantial equatorial mount. You should look for a mount with a payload capacity of at least 45-50kg (100 lbs) for imaging to ensure stability and precise tracking. Mounts in the Losmandy Titan, Celestron CGX-L, or Software Bisque Paramount class are appropriate.\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\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e1600mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optics Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptics Upgrades\u003c\/td\u003e\n\u003ctd\u003eOptional 1\/8 PV and 1\/10 PV Ultra\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e82mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003e9-point CNC machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e29kg (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Diameter\u003c\/td\u003e\n\u003ctd\u003e434mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1580mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated fan\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\"\u003eVX16 Optical Tube Assembly\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":"Professional (1\/6 PV)","offer_id":52942650179869,"sku":"OOUK-VX16","price":7182.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942650212637,"sku":"OOUK-VX16-1-8-PV-OPTICS","price":7503.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942650245405,"sku":"OOUK-VX16-1-10-PV-OPTICS","price":8124.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_0777e978-a4bd-4d76-bb00-eac8cc46fd0f.jpg?v=1789608596"},{"product_id":"orion-optics-uk-vx20","title":"Orion Optics UK VX20 DOB Optical Tube Assembly","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e500mm (20\") primary mirror for exceptional light-gathering\u003c\/li\u003e\n\u003cli\u003eFast f\/4 focal ratio, ideal for deep-sky imaging\u003c\/li\u003e\n\u003cli\u003eStandard 1\/6 PV wavefront optics, hand-figured in the UK\u003c\/li\u003e\n\u003cli\u003e9-point CNC-machined mirror cell with cooling fan\u003c\/li\u003e\n\u003cli\u003e2\" focuser with reduction gearing for precise focus control\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\u003eDownloads\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\u003eOrion Optics UK VX20 DOB Optical Tube Assembly\u003c\/h2\u003e\n\u003cp\u003eThe Orion Optics UK VX20 DOB Optical Tube Assembly centers on a massive 500mm primary mirror with a fast f\/4 focal ratio, delivering immense light-gathering power for observing and imaging the faintest deep-sky objects. With a nominal focal length of 2000mm, this OTA features hand-figured optics certified to a minimum 1\/6 PV wavefront accuracy, ensuring high-contrast planetary and lunar views. The primary mirror is supported by a 9-point CNC-machined cell with an integrated cooling fan to maintain thermal stability and peak optical performance.\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 500mm f\/4 Mirror with Certified 1\/6 PV Wavefront Accuracy\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the VX20 is the 500mm parabolic primary mirror, hand-finished in the UK to a guaranteed surface accuracy of 1\/6 Peak-to-Valley wavefront error or better. This level of precision, verified by a Zygo laser interferometer report supplied with every scope, goes far beyond the \"diffraction-limited\" standard. The result is visibly higher contrast, sharper stars, and the ability to resolve finer detail on planetary surfaces, limited only by atmospheric seeing.\u003c\/p\u003e\n\u003cp\u003eThe fast f\/4 focal ratio makes the VX20 an exceptional instrument for deep-sky imaging, capturing faint nebulae and distant galaxies with shorter exposure times. This optical speed, combined with the sheer aperture, provides incredibly bright, wide-field views that can frame entire star clusters and large emission nebulae in a single field with the right eyepiece.\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\u003eMechanical Design: 9-Point Cell and Truss Tube for Thermal Stability\u003c\/h3\u003e\n\u003cp\u003eA mirror of this size requires uncompromising support. The VX20 utilizes a CNC-machined, 9-point flotation mirror cell that distributes the mirror's weight evenly, preventing flexure and preserving the optical figure at any viewing angle. An integrated cooling fan accelerates thermal equilibrium, reducing tube currents and ensuring your telescope is ready for high-magnification use as quickly as possible.\u003c\/p\u003e\n\u003cp\u003eThe aluminium truss tube design provides a rigid and lightweight structure, critical for maintaining collimation as the telescope moves. With a total weight of 40kg and a length of 1945mm, the truss structure is essential for breaking the OTA down into more manageable components for transport and 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\u003eImaging Interface: 2\" Reduction-Geared Focuser for Precise Control\u003c\/h3\u003e\n\u003cp\u003eAchieving critical focus at f\/4 is demanding, and the VX20 is equipped with a 2\" focuser featuring reduction gearing. This dual-speed mechanism allows for coarse adjustments to find the general focus point, followed by fine, precise movements to snap the image into perfect sharpness. This level of control is essential for both high-resolution planetary imaging and ensuring pinpoint stars in astrophotography.\u003c\/p\u003e\n\u003cp\u003eThe focuser accepts standard 2\" eyepieces and accessories, providing access to the widest possible true fields of view. For added flexibility, it is also fitted with a 1.25\" adapter, allowing you to use a full range of standard eyepieces and filters for planetary observation.\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\u003eChoosing Your Optical Grade: 1\/6 PV vs. the 1\/8 PV and 1\/10 PV Upgrades\u003c\/h3\u003e\n\u003cp\u003eWhile the standard 1\/6 PV optic delivers superb images, Orion Optics UK offers two upgrade paths for the most demanding observers. Each step represents a significant increase in the time and skill invested during the hand-figuring process, resulting in a mirror surface that more closely approaches perfection.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/6 PV (Professional Grade):\u003c\/strong\u003e The standard offering. Excellent for all-around observing, providing sharp, high-contrast images that outperform mass-produced optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/8 PV (Research Grade):\u003c\/strong\u003e A meaningful step up for dedicated planetary and lunar observers. This higher precision minimizes light scatter, improving the visibility of low-contrast details like subtle banding on Saturn or intricate lunar rilles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/10 PV (Ultra Grade):\u003c\/strong\u003e The highest level of correction available. This grade is for those seeking the ultimate in optical performance, capable of delivering the sharpest, highest-fidelity images the 500mm aperture can theoretically produce under perfect seeing conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eComparing the Optical Grades\u003c\/h3\u003e\n\u003cp\u003eThe images below show the same view of Saturn captured through each available optical grade, under identical conditions -- a visual illustration of how each step up in wavefront accuracy sharpens contrast and fine detail.\u003c\/p\u003e\n\u003cdiv class=\"DAV-comparison-grid\"\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_6-PV.jpg\" alt=\"Saturn viewed through 1\/6 PV Professional grade optics\"\u003e\n\u003cp\u003e1\/6 PV (Professional)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_8-PV.jpg\" alt=\"Saturn viewed through 1\/8 PV Research grade optics\"\u003e\n\u003cp\u003e1\/8 PV (Research)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-comparison-item\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Saturn-1_10-PV.jpg\" alt=\"Saturn viewed through 1\/10 PV Ultra grade optics\"\u003e\n\u003cp\u003e1\/10 PV (Ultra)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\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 real-world difference between the 1\/6 PV and 1\/10 PV optics on the VX20?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe difference is most apparent during high-magnification viewing of bright objects under steady skies. While the \u003cstrong\u003e1\/6 PV\u003c\/strong\u003e optic provides excellent, sharp views, the \u003cstrong\u003e1\/10 PV Ultra\u003c\/strong\u003e optic will show a higher level of contrast and resolve finer, lower-contrast details. On Jupiter, this could mean seeing more subtle swirls and festoons within the cloud belts; on the Moon, it translates to sharper crater wall terraces and rilles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Orion Optics UK VX20 perform on Jupiter with its f\/4 optics?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe VX20's 500mm aperture will resolve an incredible amount of detail on Jupiter. The fast f\/4 focal ratio is primarily for wide-field, deep-sky work, but when paired with a quality Barlow lens to increase the effective focal length, it becomes a formidable planetary instrument. The certified optical quality ensures that you can push the magnification to the limit of the atmosphere, revealing intricate details in the Great Red Spot and the main equatorial belts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 40kg weight of the VX20 OTA manageable for setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e40kg\u003c\/strong\u003e weight is for the fully assembled optical tube. The truss design allows the VX20 to be broken down into smaller, lighter components: the mirror box, the upper tube assembly, and the truss poles. While still a very large instrument, this disassembly makes it significantly more manageable to transport and set up than a solid-tube telescope of a similar size. It is typically a two-person job for safe and efficient assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow critical is the cooling fan for the VX20's 500mm mirror?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a \u003cstrong\u003e500mm\u003c\/strong\u003e mirror, active cooling is essential. The fan dramatically reduces the time it takes for the large mirror to reach ambient temperature. Without it, the mirror would continue to radiate heat for hours, creating disruptive air currents inside the optical tube (tube currents) that blur the image and prevent sharp, high-magnification views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of views can I expect of the Dumbbell Nebula (M27) with the VX20?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its 500mm aperture, the VX20 will provide stunning views of M27. The immense light-gathering ability will show the nebula's classic apple-core shape with remarkable brightness and clarity. With a UHC or O-III filter, you can expect to see intricate internal structures, faint outer extensions, and a clear distinction between the brighter central regions and the fainter lobes, all set against a dark sky background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the VX20's f\/4 focal ratio require special eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, fast f\/4 systems are demanding on eyepieces. To get sharp stars across the entire field of view, it is highly recommended to use premium eyepieces well-corrected for coma, a common aberration in fast Newtonians. Additionally, a coma corrector accessory is strongly advised, especially for imaging, to ensure pinpoint stars from edge to edge. The fast focal ratio also makes precise collimation absolutely critical for optimal performance.\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\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eNewtonian Reflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mirror Diameter\u003c\/td\u003e\n\u003ctd\u003e500mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e2000mm (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Optics Grade\u003c\/td\u003e\n\u003ctd\u003e1\/6 PV wavefront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Upgrades\u003c\/td\u003e\n\u003ctd\u003e1\/8 PV and 1\/10 PV Ultra available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Mirror Size\u003c\/td\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e2\" focuser with reduction gearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cell\u003c\/td\u003e\n\u003ctd\u003e9-point CNC machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Cooling\u003c\/td\u003e\n\u003ctd\u003eIntegrated Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Type\u003c\/td\u003e\n\u003ctd\u003eTruss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Material\u003c\/td\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e1945mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Weight\u003c\/td\u003e\n\u003ctd\u003e40kg (nominal)\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\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":"Professional (1\/6 PV)","offer_id":52942651588893,"sku":"OOUK-VX20","price":11165.0,"currency_code":"CAD","in_stock":true},{"title":"Research (1\/8 PV)","offer_id":52942651621661,"sku":"OOUK-VX20-1-8-PV-OPTICS","price":11600.0,"currency_code":"CAD","in_stock":true},{"title":"Ultra (1\/10 PV)","offer_id":52942651654429,"sku":"OOUK-VX20-1-10PV-OPTICS","price":12336.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Orion-Optics-UK-Logo_6d378984-e56f-4039-bd8a-80fd764cfc1a.jpg?v=1789608606"}],"url":"https:\/\/davidastro.com\/collections\/orion-optics-uk-vx-newtonian-telescopes.oembed","provider":"David Astro","version":"1.0","type":"link"}