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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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Orion Optics UK VX10 Optical Tube Assembly

SKU OOUK-VX10
Original price $1,603.56 - Original price $1,773.71
Original price
$1,603.56
$1,603.56 - $1,773.71
Current price $1,603.56
Price Match Policy!
  • 250mm (10") Primary Mirror Diameter
  • 1200mm Nominal Focal Length
  • f/4.8 Focal Ratio
  • Standard 1/6 PV Wavefront Optics
  • 11kg Nominal Tube Weight
  • CNC 9-Point Mirror Cell with Cooling Fan
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty
  • Orion Optics UK VX10 Optical Tube Assembly

    The 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.

    250mm Aperture at a Fast f/4.8

    With 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.

    1/6 PV Wavefront Accuracy with Zygo-Verified Upgrades

    Every 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.

    For 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.

    An 11kg Tube with a 9-Point Mirror Cell

    The 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.

    Comparing the Optical Grades

    The 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.

    Saturn viewed through 1/6 PV Professional grade optics

    1/6 PV (Professional)

    Saturn viewed through 1/8 PV Research grade optics

    1/8 PV (Research)

    Saturn viewed through 1/10 PV Ultra grade optics

    1/10 PV (Ultra)

  • What does "1/6 PV wavefront" mean for the Orion Optics UK VX10?

    PV wavefront 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 1/6 PV 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.

    Is it worth upgrading the VX10 optics to 1/8 PV or 1/10 PV?

    For visual observers and imagers focused on planetary detail, the upgrade is significant. While the standard 1/6 PV optic is excellent, moving to 1/8 PV (Research Grade) or 1/10 PV (Ultra Grade) 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.

    What kind of mount do I need for the 11kg VX10 OTA?

    With a nominal tube weight of 11kg, 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.

    How does the VX10's f/4.8 focal ratio affect imaging of the Orion Nebula (M42)?

    The f/4.8 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.

    Will I see a difference between the VX10 optical grades on Jupiter?

    Yes, assuming good atmospheric seeing. While the standard 1/6 PV optic will show Jupiter's main cloud belts and the Great Red Spot clearly, upgrading to 1/8 PV or 1/10 PV 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.

    What is included with the Orion Optics UK VX10 tube assembly?

    The VX10 optical tube assembly is fitted with a 2" focuser with reduction gearing 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.

  • Primary Mirror Diameter 250mm
    Focal Length 1200mm
    Focal Ratio f/4.8
    Standard Optical Grade 1/6 PV wavefront
    Optical Upgrades Optional 1/8 PV and 1/10 PV Ultra
    Secondary Mirror Size 63mm
    Tube Weight 11kg (nominal)
    Tube Length 1140mm
    Tube Diameter 280mm
    Tube Material Aluminium
    Mirror Cell CNC 9-point suspension
    Focuser 2" with reduction gearing
    Mirror Cooling Integrated Fan
  • Orion Optics UK 1-Year Warranty