Yes…It’s TRUE. I used a 3D printer to solve a problem I have had with my Celestron CGEM mount ever since I bought it. The first issue I focused on was Periodic Error Correction (PEC). My very old CGEM is of the vintage when Celestron used non-integer gearing in their mounts. The periodic error requires 3 rotations of the worm gear for the error to repeat. The PEC logic they installed in the CGEM assumed that the periodic error repeated for every rotation of the worm gear. My take on…
Category: PEC
Issues surrounding Periodic Error Correction of my telescope and work I have performed to address PEC.
Off-axis Guider…the first year
Over the 2021/2022 winter I bought a ZWO OAG. I spent those cold months figuring out how to incorporate this device into my set-up. My post Adding an Off-Axis Guider to my Set-up goes into lots of detail regarding back focus requirements for my two telescopes (Celestron 8” EdgeHD SCT and a Skywatcher BK80ED refractor). It wasn’t until May that I finally got a chance to use my set-up “under the stars”. Don’t let your imaging camera drop to the ground! My post “First Light” using an Off-Axis Guider explains…