My star tracker mount slipped during a 4 minute shot and I got 38 minutes of trails instead of the Orion Nebula
Set up in my backyard near Tucson last Tuesday, polar aligned everything, and walked away to let it run. Came back to find the set screw on the RA axis had backed out, so the whole mount was just drifting. Do you all locktite these screws or just check them every session?