T-Adapter – 9.25″, 11″ & 14″ EdgeHD – 48mm
- 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
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The 48mm T-Adapter is the accessory of choice if you’d like to attach your full frame DSLR or astronomical camera to a Celestron EdgeHD optical tube. With DSLR CCD chips getting larger, Celestron created the 48mm T-Adapter to reduce vignetting and provide a larger light path to your camera’s sensor, producing exceptional astrophotos.
The standard T-Adapter for EdgeHD 9.25″, 11″, and 14″ comes with a 42mm T-Thread for a 42mm T-Ring. This smaller 42mm T-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.
|Compatible Telescopes:||Fits all EdgeHD 9.25″, 11″, and 14″ Telescopes|
|T-Rings Threads:||M48 x 0.75| NOTE: This adapter will not work with M42 x0.75 T-Rings|
|Flange distance:||91mm (3.58″)|
|Outside diameter:||72mm (2.83″)|
|Weight:||8 oz (226.79 g)|
|Dimensions||15 × 10.5 × 10 cm|