My star tracker died at 11pm on a clear night in Tucson, so I stacked the frames I had
Two nights ago I drove out past Gates Pass to shoot the Orion Nebula and my little star tracker just quit on me about 40 frames in. It made a weird grinding noise, then stopped, and I sat there in the dark with nothing to do but call it. Instead of packing up, I put the camera on a tripod and shot 30 second subs until the battery died, figuring a wobbly stack beats nothing. Ended up with about 90 messy frames and after stacking and cropping in Siril I got a picture I'm honestly proud of, the nebula core is soft but the dust lanes show up way better than I expected. Anyone got a way to test a tracker at home before hauling it out to the desert?