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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 SV158 75mm Extension Tube 2 inch
SVBONY SV158 90mm Extension Tube - 2"
SVBONY SV158 90mm Extension Tube - 2"
SVBONY SV158 75mm Extension Tube 2 inch

SVBONY SV158 90mm Extension Tube - 2"

par SVBONY
UGC SV-W9119B
$15.19 - $15.19
$15.19
$15.19 - $15.19
$15.19
Égalisation de prix!
  • Adds Critical Spacing to 2-inch Focusers
  • Solves Focuser Travel Limitations
  • CNC-Machined Aluminum Alloy Construction
  • Standard 2-inch Barrel Diameter
  • Black Anodized to Reduce Reflections
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • SVBONY SV158 75mm Extension Tube 2 inch

    The SVBONY SV158 Extension Tube adds critical spacing to any 2-inch focuser or visual back, solving common focus travel issues. This all-metal, black anodized tube is machined from a solid block of aluminum alloy to securely fit standard 2-inch accessories without introducing flexure.

    Add Critical Spacing to Your 2-inch Focuser

    This extension tube is essential when your focuser runs out of outward travel before achieving a sharp image. This often occurs when using imaging cameras, off-axis guiders, or certain eyepieces that require more back-focus. By inserting the SV158 into your 2-inch focuser, you physically extend the light path, pushing the focal plane outward to where your accessories can reach it.

    Rigid, CNC-Machined 2-inch Aluminum Construction

    Constructed from black anodized aluminum alloy, the SV158 maintains a rigid and secure connection in your optical train. The robust build prevents flexure and tilt that can ruin an astrophoto, ensuring your camera or eyepiece remains perfectly aligned with the telescope's optical axis. The blackened interior surfaces also help to minimize stray light and improve image contrast.

  • When would I need the SVBONY SV158 2-inch Extension Tube?

    You need the SVBONY SV158 Extension Tube when you cannot achieve focus because your focuser does not have enough "out-travel." This is a common issue with astrophotography cameras, which often have a focal point further back than typical eyepieces, or with certain telescope and eyepiece combinations.

    Will the SVBONY SV158 Extension Tube work with my 2-inch diagonal and eyepieces?

    Yes. The SVBONY SV158 is designed with a standard 2-inch barrel and receiver, making it compatible with all standard 2-inch diagonals, eyepieces, Barlow lenses, and other accessories.

    Is the SVBONY SV158 Extension Tube suitable for astrophotography?

    Absolutely. The SVBONY SV158 is ideal for astrophotography. Its rigid aluminum alloy construction prevents flexure in the imaging train, and it provides the necessary spacing to bring cameras, filter wheels, and off-axis guiders into focus.

    What is the SVBONY SV158 Extension Tube made of?

    The tube is precision CNC-machined from a single piece of high-grade Aluminum Alloy and finished with a black anodization to increase durability and reduce internal reflections.

    I can't reach focus with my DSLR on my 8" SCT. Will the SVBONY SV158 Extension Tube help?

    Yes, this is a perfect use case. SCTs often require additional back-focus to reach focus with DSLR or dedicated astronomy cameras. The SVBONY SV158 2-inch Extension Tube will add the necessary length to your optical path, allowing you to easily achieve sharp focus.

    My new wide-field 2-inch eyepiece requires a lot of 'out-travel' on my Dobsonian. Is the SVBONY SV158 a good solution?

    Yes. If your Dobsonian's focuser is racked all the way out and you still can't focus your 2-inch eyepiece, the SVBONY SV158 Extension Tube is the correct solution. It will provide the extra focuser travel you need to get a sharp, wide-field view.

  • Material Aluminum Alloy
    Color Black
    Barrel Size 2''
  • SVBONY Warranty Policy