The Celestron Large SCT/EdgeHD Adapter was made especially for our Off-Axis Guider (#93648, sold separately). When paired, these two imaging accessories allow you to utilize the full image circle created by a 9.25”, 11” or 14” SCT or EdgeHD telescope. This configuration is especially helpful to owners of larger format cameras, such as the Canon 5D Mark III or the 6D, since their full frame can take advantage of the more substantial area of illumination produced by larger SCT and EdgeHD telescopes. Great for larger format cameras like the Canon 5D or 6D—allows use of the full image circle for better illumination of the sensor.
The OAG adapter is machined, black anodized aluminum. It has a clear aperture of 62.7 mm (2.47"), consumes 16 mm of back focus, and weighs just 132g (4.64oz). It is machined out of black anodized aluminum and attaches to the large baffle lock nut threads on the rear of the telescope.