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Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”
Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”

Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”

by Celestron
SKU CEL-93622
CA$104.00 - CA$104.00
CA$104.00
CA$104.00 - CA$104.00
CA$104.00
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  • Connects full-frame DSLR and astronomical cameras to EdgeHD 9.25", 11", and 14" telescopes
  • Features a wide M48 x 0.75 thread to eliminate vignetting on large sensors
  • Provides a larger, unhindered light path compared to standard 42mm adapters
  • Weighs just 8 oz (226.79 g)
  • Engineered for a precise 91mm flange distance
6 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”

    The Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14” is the definitive solution for connecting full-frame cameras to your telescope, using a larger M48 x 0.75 thread to deliver a fully illuminated light path to the sensor. Weighing only 8 oz, this adapter is specifically designed to overcome the vignetting that occurs with standard 42mm adapters on full-frame sensors. It ensures the entire sensor receives the maximum amount of light from the EdgeHD optics.

    Full-Frame Illumination: The M48 x 0.75 Advantage

    As DSLR and dedicated astronomy camera sensors grow larger, the physical aperture of the connecting hardware becomes the limiting factor in image quality. This 48mm T-Adapter provides a significantly larger clear aperture than a standard M42 adapter, preventing the light cone from being truncated before it reaches the sensor. The result is an image free of darkened corners, allowing you to use your full-frame sensor's entire area effectively.

    48mm vs. 42mm T-Adapter: Why the Larger Thread Matters

    The standard M42 T-Adapter was designed when smaller sensors were the norm. For modern full-frame cameras, its 42mm opening acts as a bottleneck, physically blocking light from reaching the outer edges of the sensor. This Celestron 48mm T-Adapter is the direct upgrade for imagers using full-frame cameras with an EdgeHD 9.25", 11", or 14" optical tube.

    • For Full-Frame Sensors: The 48mm adapter is essential. It allows the unhindered light cone to illuminate the entire sensor, maximizing signal and producing evenly lit frames.
    • For APS-C Sensors: If you are using a camera with a smaller APS-C sensor, this 48mm adapter offers no advantage. The standard 42mm T-Adapter is sufficient to fully illuminate these smaller chips.

  • Is the Celestron 48mm T-Adapter required for my full-frame camera on an EdgeHD 11"?

    Yes. To avoid significant vignetting (darkening in the corners of your images), the 48mm T-Adapter is the recommended accessory. A standard 42mm adapter will physically constrict the light path, preventing full illumination of a 35mm-format sensor on an EdgeHD 9.25", 11", or 14" telescope.

    Will this 48mm T-Adapter improve images from my APS-C camera on an EdgeHD 9.25" scope?

    No, this adapter will not offer any advantage for smaller APS-C sensors. The light cone from the EdgeHD optics is already large enough to be fully captured by an APS-C sensor through a standard 42mm T-Adapter. You should use the Celestron 42mm T-Adapter (#93646) for APS-C cameras.

    What is the difference between an M42 and an M48 thread on this T-Adapter?

    The numbers refer to the diameter of the thread in millimeters. The M48 thread on this adapter has a larger opening than the M42 thread on standard T-adapters. This larger diameter is crucial for passing a wider cone of light to a large, full-frame imaging sensor without obstruction.

    Do I need a special T-Ring for the Celestron 48mm T-Adapter?

    Yes, you must use a T-Ring with a corresponding M48 x 0.75 thread. Standard 42mm T-Rings are not compatible. While Celestron does not manufacture 48mm T-Rings, they are readily available from other manufacturers for popular camera brands like Canon, Nikon, and Sony.

    Will this adapter work with my EdgeHD 8" telescope?

    No, this adapter is specifically designed for the larger rear cells of the EdgeHD 9.25", 11", and 14" models. A different adapter is required for the EdgeHD 8" optical tube.

    What is the total back focus consumed by the 48mm T-Adapter?

    The adapter itself does not have a listed back focus consumption, but it is part of the overall imaging train. The critical distance for EdgeHD telescopes is from the rear flange to the sensor, and this adapter is designed to place your camera sensor at the correct distance when used with a standard T-ring.

  • Compatible Telescopes EdgeHD 9.25", 11", and 14"
    T-Ring Threads M48 x 0.75
    Incompatible T-Rings M42 x 0.75
    Flange Distance 91mm (3.58")
    Outside Diameter 72mm (2.83")
    Weight 8 oz (226.79 g)
    • Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”

      48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”

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  • Celestron 2-Year Warranty