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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.
Shelyak Adapter Ring for Canon EOS to T-Mount (M42x0.75)

Shelyak Adapter Ring for Canon EOS to T-Mount (M42x0.75)

par Shelyak
UGC SHK-BA0023
$227.00 - $227.00
$227.00
$227.00 - $227.00
$227.00
Égalisation de prix!
  • Adapts Canon EOS (EF/EF-S) camera bodies to the standard T-mount
  • Provides female M42x0.75 T-threads for secure connections
  • Enables prime-focus astrophotography through a telescope
  • Essential for connecting to T-threaded flatteners, reducers, and filter wheels
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ

  • Adapter Ring for Canon EOS to T-Mount (M42x0.75)

    This adapter ring is the fundamental link for attaching a Canon EOS camera body to virtually any telescope for prime-focus astrophotography, providing a solid connection via the universal M42x0.75 T-thread standard. By replacing your camera's lens, this adapter converts the camera's bayonet mount into a female M42x0.75 threaded interface, allowing direct coupling to your imaging train.

    Connect Canon EOS Cameras to M42x0.75 T-Thread Accessories

    The M42x0.75 thread, commonly known as the T-thread or T-mount, is the industry standard for astronomical accessories. This adapter allows you to securely attach your Canon DSLR or mirrorless camera body to a telescope's focuser (using a separate T-to-1.25" or T-to-2" nosepiece), a field flattener, a coma corrector, an off-axis guider, or a filter wheel.

    This direct, threaded connection is far more secure than eyepiece projection methods, eliminating flexure and ensuring the camera sensor remains perfectly parallel to the focal plane. It is the essential first piece required to begin imaging the night sky with a Canon EOS camera through a telescope.

  • What is the primary function of this Adapter ring EOS / T-mount?

    Its primary function is to allow you to attach a Canon EOS DSLR or mirrorless camera body to any telescope or accessory that uses the standard M42x0.75 T-thread. This enables prime-focus astrophotography by placing your camera's sensor at the telescope's focal point.

    Can I use this adapter to attach my Canon EOS Rebel to my 8" SCT for imaging Jupiter?

    Yes. You would attach this adapter ring to your Canon Rebel body in place of the lens. Then, you would typically thread the camera onto a separate SCT T-Adapter, which screws onto the rear cell of your telescope. This places your camera's sensor at the correct position to capture a focused image of Jupiter.

    Will autofocus and electronic aperture control work with this EOS / T-mount adapter?

    No. This is a purely mechanical adapter and does not have any electronic contacts. It cannot pass power or data between the camera body and the telescope. You must use your camera in full Manual (M) mode for both focusing and exposure control.

    What accessories besides a telescope use the M42x0.75 T-mount thread?

    The M42x0.75 T-thread is a universal standard in astronomy. You can use this adapter to connect your Canon EOS camera to a wide range of imaging accessories, including:

    • Filter wheels and filter drawers
    • Off-axis guiders (OAGs)
    • Field flatteners and focal reducers
    • Coma correctors
    • Extension tubes for adjusting back focus

    Is this adapter compatible with both full-frame (EF) and crop-sensor (EF-S) Canon EOS cameras?

    Yes. The physical bayonet mount is identical on both full-frame (e.g., Canon 5D, 6D, Ra) and crop-sensor APS-C (e.g., Canon Rebel series, 90D, 7D) camera bodies. This adapter will securely fit all Canon EOS DSLRs. It will also fit Canon EOS R-series mirrorless cameras when used with the standard Canon EF-EOS R mount adapter.

    Do I need anything else to connect my camera to a 2" focuser using this adapter?

    Yes. This adapter provides the T-threads on your camera body. To connect to a 2" focuser, you will also need a separate "2-inch prime focus adapter." This is a simple barrel with male T-threads on one end (which screw into this adapter) and a 2-inch nosepiece on the other end that slides into your telescope's focuser.