48MM T-ADAPTER FOR EDGEHD 9.25”, 11”, AND 14”

by Celestron
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  • Attaches directly to the rear cell of the larger Edge optical tubes
  • Produces better illumination for today's larger full-frame imaging sensors, all the way to the corners
  • Reduces vignetting–darkening around the edges of the image sensor–by providing unobstructed light to the camera

Adapter truncates the light cone coming from the back of the EdgeHD optical tubes, which creates vignetting in the corners of full frame imaging sensors. The 48mm T-Adapter has a larger T-Thread opening, allowing the unhindered light to illuminate the entire sensor, optimizing your full-frame sensor’s capabilities.

Below, you will find the difference between the 42mm and the 48mm T-Rings to give you an idea of the space the 42mm and 48mm T-Threads on the T-Adapter will provide.

Note: The 48mm T-Adapter will not offer any advantage to imagers with smaller APS-C sensors.  For this, Celestron still recommends the 42mm T-Adapter (#93646) and 42mm T-Rings for your specific model of camera. T-Rings are sold separately. See our 42mm Nikon T-Ring or Canon eos T-Ring.

Celestron does not offer 48mm T-Rings, however, we do recommend the ones sold by Sky-Watcher USA.  They offer the most popular models for Canon, Nikon, and Sony cameras.

The chart below shows the relative illumination of the sensor in a 42mm and a 48mm T-Adapter. The X-axis is the distance from the center of the camera sensor.  The Y-Axis is the amount of light being received. As you can see, the 48mm receives more light than the 42mm T-Adapter and will reduce vignetting in your images.

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