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March 31, 2023 at 11:30 am
#14234
Luka B. and Mike C. have provided me with great ways to use the AT80ED refractor with my Canon Rebel T5 camera. I had been unable to reach the focal point except with an eyepiece projection technique. This worked but there was a lot of distortion (curving peripheral field) in the images. Luka suggested using a Barlow lens to diverge the light path and effectively increase the focal length. I used the Orion 2X Shorty barlow between the scope diagonal and the Rebel T5 camera with its T piece and now the focal point is near the mid point of the focuser draw tube. Below is an image of the moon from 2 nights ago taken with this setup.