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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.
Daystar T-Adapter to Canon

Daystar T-Adapter to Canon

by Daystar Filters
SKU DAY-RFTC
$39.00 - $39.00
$39.00
$39.00 - $39.00
$39.00
Price Match Policy!
  • Connects Canon EF-mount cameras to standard T-threads
  • Standardized Female T-Thread (M42x0.75)
  • Enables Prime Focus Astrophotography
  • Single-Piece, Secure Mechanical Connection
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Daystar T-Adapter to Canon

    The Daystar T-Adapter for Canon connects any Canon EF-mount camera body to the universal M42x0.75 T-thread standard found on virtually all modern telescopes and imaging accessories. This single adapter is the key component for prime focus astrophotography, enabling a direct, secure attachment with the correct M42x0.75 female thread.

    The Universal M42x0.75 T-Thread Standard: Connecting Your Canon EF Camera

    This adapter is the essential mechanical bridge between two different standards: the photographic Canon EF bayonet mount and the astronomical M42x0.75 T-thread. By attaching this ring to your camera body in place of a lens, you can then thread the entire camera assembly directly onto your telescope's focuser, a field flattener, or an off-axis guider for a rigid imaging train.

  • What cameras are compatible with the Daystar T-Adapter to Canon?

    This adapter is designed for any camera that uses the Canon EF lens mount. This includes a wide range of Canon DSLR cameras (like the EOS Rebel series, 7D, 5D, etc.) and can also be used with Canon's mirrorless RF-mount cameras (like the R5 or R6) if you use Canon's own EF-to-RF mount adapter.

    What is a "T-thread" and why do I need this Daystar adapter for it?

    The "T-thread" is the unofficial industry standard for connecting cameras and accessories in astronomy. It refers to a specific thread size: M42x0.75 (42mm diameter with a 0.75mm thread pitch). Most telescopes, focusers, and imaging accessories feature this male thread. This Daystar T-Adapter converts your camera's bayonet mount into the corresponding female T-thread, allowing you to connect it to your gear.

    How do I attach the Daystar Canon T-Adapter to my telescope?

    Installation is a two-step process:

    • First, attach the T-adapter to your camera body just like you would a lens. Align the red dot on the adapter with the red dot on your camera's mount and turn until it clicks into place.
    • Second, thread the entire camera and adapter assembly onto the male T-thread of your telescope's focuser, visual back, or other accessory until it is snug and secure.

    Can I use the Daystar T-Adapter to photograph the Orion Nebula (M42) with my Canon 6D and an 8" SCT?

    Yes, this is a perfect application for the Daystar T-Adapter. An 8" Schmidt-Cassegrain Telescope typically has a T-thread on its visual back or an optional focal reducer. This adapter will allow you to mount your Canon 6D directly to the telescope, placing its full-frame sensor at the telescope's prime focus to capture deep-sky objects like the Orion Nebula (M42).

    Will this Daystar T-Adapter work for connecting my Canon R5 to my refractor for imaging the Andromeda Galaxy (M31)?

    Not directly. The Canon R5 uses the newer RF mount, while this adapter is for the EF mount. To use this T-adapter with your R5, you must first attach a Canon Mount Adapter EF-EOS R to your camera. Then, this Daystar T-Adapter will attach to the EF-mount side of that adapter, allowing you to connect to your refractor's T-threads.

    Does the Daystar T-Adapter for Canon add any magnification?

    No. The T-adapter is a purely mechanical spacer with no optical elements. It does not change the magnification or focal length of your telescope. The resulting image scale on your camera's sensor is determined solely by your telescope's native focal length.

  • Camera Mount Canon EF
    Telescope Side Thread Female T-Thread (M42x0.75)

    • Daystar T-Adapter to Canon

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