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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.
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.
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"
SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"

SVBONY SV230 8-20mm Super Zoom Aspheric Eyepiece - 1.25"

par SVBONY
UGC SV-W9185A
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Égalisation de prix!
  • 8mm to 20mm Continuous Zoom Focal Length
  • Parfocal Design Maintains Focus Across Zoom Range
  • Aspheric Optics for Edge-to-Edge Sharpness
  • Long 17-19mm Eye Relief for Eyeglass Wearers
  • Includes Both 1.25" and 2" Barrels
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Svbony SV230 Zoom Eyepiece Clickstop Parfocal 8-20mm

    The Svbony SV230 Zoom Eyepiece replaces a case of individual eyepieces with a single, parfocal 8-20mm optical system compatible with both 1.25" and 2" focusers. It maintains focus across its entire zoom range and provides a comfortable 17-19mm of eye relief, all in a substantial 500g body designed for serious observation.

    Parfocal 8-20mm Zoom: One Eyepiece, Multiple Magnifications

    This eyepiece's core feature is its continuous 8mm to 20mm zoom range. You can seamlessly transition from low-power wide fields to high-power planetary detail without ever swapping eyepieces. Because the SV230 is parfocal, there's no need to refocus after changing magnification, allowing you to track moving objects or adjust for changing seeing conditions instantly.

    Sharp Fields from 8mm to 20mm: Aspheric Optical Design

    Svbony integrated aspheric lens elements and an astigmatism corrector into the SV230's design to deliver sharp, high-contrast views across the entire field. This advanced optical formula minimizes the edge distortion and field curvature often seen in conventional zoom eyepieces. The result is a clear, immersive view where stars remain tight points from the center to the field stop, regardless of the selected focal length.

    Built for Comfort and Compatibility: 17-19mm Eye Relief and Dual Barrels

    With a generous 17-19mm of eye relief, the SV230 is comfortable for all observers, including those who wear glasses. The included adapter allows the eyepiece to be used in both 1.25" and 2" focusers, ensuring compatibility with virtually any telescope. While its 500g weight reflects a robust optical and mechanical construction, be sure to check your focuser's capacity and your telescope's balance.

    • Dual Fit Barrels: Use the native 1.25" barrel for smaller telescopes or attach the included 2" adapter for larger focusers, providing maximum flexibility.
    • Long Eye Relief: The 17-19mm eye relief allows you to see the full field of view comfortably with or without eyeglasses, reducing eye strain during long sessions.
    • Camera Ready: The rubber eyecup can be removed to reveal a T-mount thread, allowing for direct connection of a DSLR or mirrorless camera for afocal astrophotography (requires a separate T-adapter).

    The 8-20mm SV230 Zoom vs. Fixed Eyepieces: Convenience and Parfocal Design

    While a set of premium fixed-focal-length eyepieces might offer a wider apparent field of view at specific magnifications, they cannot match the operational simplicity of the SV230 zoom.

    • Fixed Eyepiece Advantage: Individual eyepieces are often lighter and can be optimized for a single, wider apparent field of view.
    • SV230 Zoom Advantage: The SV230 offers the power of four or five eyepieces in one. Its parfocal nature eliminates constant refocusing, making it ideal for outreach events, tracking objects like the International Space Station, or for observers who value efficiency and want to minimize handling gear in the dark.

  • What does 'parfocal' mean for the Svbony SV230 eyepiece?

    Parfocal means the eyepiece is engineered to maintain focus even when you change the magnification. Once you achieve a sharp image at 20mm, you can zoom all the way to 8mm, and the view will remain sharp with little to no adjustment needed. This is a significant convenience, especially when observing planets or the Moon.

    Is the Svbony SV230's 17-19mm eye relief enough for eyeglass wearers?

    Yes. The 17-19mm eye relief is considered long and is specifically designed to be comfortable for observers who need to wear glasses to correct for astigmatism. You will be able to see the entire field of view without having to press your glasses against the lens.

    How do I attach a camera to the Svbony SV230 zoom eyepiece?

    The SV230 features a removable rubber eyecup. Once removed, it exposes a T-mount thread underneath. To attach a camera, you will need a T-ring specific to your camera's brand (e.g., Canon, Nikon, Sony) and potentially a T-mount adapter, which are sold separately. This allows for sturdy afocal projection imaging.

    Will the 500g weight of the SV230 be an issue for my telescope?

    The 500g (1.1 lbs) weight is substantial due to the complex optics. For most telescopes with 2" focusers, like Schmidt-Cassegrains or larger Dobsonians, this is not an issue. However, on smaller refractors or reflectors with 1.25" plastic focusers, you may need to check the focuser's load capacity and rebalance the telescope tube to prevent slipping or strain.

    How would I use the Svbony SV230 to observe Jupiter with my 8" Dobsonian?

    Start at the 20mm setting (lowest power) to easily locate Jupiter in the wide field of view. Center the planet, then smoothly zoom in towards the 8mm setting. As you zoom, the image will get larger, revealing cloud bands and the Galilean moons. Because the SV230 is parfocal, you won't need to refocus, allowing you to find the perfect magnification that seeing conditions will support for the sharpest view.

    Is the Svbony SV230 a good choice for viewing the Orion Nebula (M42)?

    Absolutely. At the 20mm setting, you can frame the entire nebula, including its faint outer extensions. You can then zoom in to the 12mm or 10mm range to resolve the four stars of the Trapezium cluster at its core. The ability to adjust magnification on the fly is perfect for exploring the intricate details of large deep-sky objects like the Orion Nebula (M42).

  • Brand SVBONY
    Eye Relief 17-19mm
    Net Weight 500g/17.66oz
  • SVBONY Warranty Policy