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July 1st: Store will be closed for Canada Day. Orders placed that day will ship on July 2nd.
Celestron T-Adapter for SCTs
Celestron T-Adapter for SCTs
Celestron T-Adapter for SCTs

Celestron T-Adapter for SCTs

by Celestron
SKU CEL-93633-A
CA$49.00 - CA$49.00
CA$49.00
CA$49.00 - CA$49.00
CA$49.00
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  • Securely attaches SLR/DSLR cameras to Schmidt-Cassegrain telescopes
  • Enables prime focus photography for high-resolution imaging
  • Threads directly onto the rear cell of SCTs
  • Metal construction for a rigid, flex-free connection
  • Requires a camera-specific T-Ring for use
5 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron T-Adapter for Schmidt-Cassegrain Telescopes

    The Celestron T-Adapter for Schmidt-Cassegrain Telescopes is the essential accessory for connecting your DSLR or SLR camera directly to your telescope's rear cell, enabling prime focus astrophotography. This all-metal adapter transforms your SCT into a massive telephoto lens, allowing you to use the telescope's native focal length—like 2000mm on an 8” SCT—to capture detailed, high-magnification images of the Moon and other celestial objects. To begin, simply pair the adapter with a T-Ring specific to your camera brand, thread it onto the telescope's rear cell, and attach your camera body for a secure, direct optical path.

    Prime Focus Photography: The Direct Path to Your SCT

    This T-Adapter is engineered for one purpose: to create the most direct and rigid connection between your camera sensor and your telescope's optical system. By removing the diagonal and visual back, you thread this adapter directly onto your SCT's rear cell. This prime focus configuration bypasses all other accessories, minimizing potential flexure and ensuring the sharpest possible image is projected straight from the telescope's optics onto your camera's sensor.

    From Telescope to 2000mm Telephoto Lens

    When connected via the T-Adapter, your camera uses the telescope as its lens, leveraging its full focal length and light-gathering power. An 8-inch Schmidt-Cassegrain, for example, becomes a powerful 2000mm telephoto lens, dwarfing the capabilities of standard camera lenses. This immense magnification is what allows you to fill the frame with craters on the Moon or capture detailed images of terrestrial subjects at a great distance.

    Short vs. Long Exposure: Lunar and Deep-Sky Imaging

    Prime focus photography with the T-Adapter is perfectly suited for short-exposure imaging of bright objects. The Moon, planets, and daytime terrestrial targets are ideal subjects. For longer exposures required to capture faint deep-sky objects like nebulae and galaxies, a stable setup is critical. Celestron recommends using an equatorial mount and a separate guidescope or off-axis guider to ensure sharp, star-pointed images during multi-minute exposures.

  • What do I need besides the Celestron T-Adapter to connect my camera?

    You will need a T-Ring that matches your specific camera brand (e.g., Canon EOS or Nikon). The T-Ring attaches to your camera body in place of the lens, and then threads onto the T-Adapter.

    How do I install the T-Adapter on my Schmidt-Cassegrain telescope?

    First, remove any accessories from the back of your telescope, such as the diagonal and visual back. Then, screw the Celestron T-Adapter directly onto the large threads of the telescope's rear cell until it is secure. Finally, thread your camera (with T-Ring attached) onto the T-Adapter.

    Can I use this T-Adapter for deep-sky objects like the Orion Nebula (M42)?

    Yes, but it requires a proper setup for long exposures. To photograph faint objects, you will need to mount your SCT on a sturdy equatorial mount and use a guiding system (like an off-axis guider or a separate guidescope) to correct for tracking errors during the exposure.

    What kind of magnification will I get with the Celestron T-Adapter?

    The T-Adapter itself does not add magnification. It allows your camera to use your telescope's native focal length. For an 8" SCT with a 2000mm focal length, you are effectively shooting with a 2000mm lens. The final image scale depends on your camera's sensor size.

    Is this T-Adapter suitable for imaging the Moon with my 8" SCT?

    Absolutely. This is the ideal method for lunar photography. The long focal length of an 8" SCT will provide a large, detailed image of the Moon on your camera sensor, allowing you to capture individual craters and mountain ranges with very short exposures.

    Will this Celestron T-Adapter work on non-SCT telescopes like refractors or Newtonians?

    No, this T-Adapter is specifically designed with threads that match the rear cell of a Schmidt-Cassegrain telescope. You would need a different type of T-adapter or prime focus adapter for other telescope designs.

  • Compatibility Schmidt-Cassegrain Telescope Rear Cells
    Camera Connection Requires camera-specific T-Ring (sold separately)
    Photography Style Prime Focus
    Material Metal
    Warranty 2-Year Warranty
    • Celestron T-Adapter for SCTs

      T-Adapter for Schmidt-Cassegrain Telescopes

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  • Celestron 2-Year Limited Warranty