This is about as good as it’s going to get — almost 7 hours total exposure in this image, but if I count the frames in the “reject” pile, it represents 15 hours of actual telescope time.
Most rejects are because of wind. My telescope sits on a rickety balcony — no matter how cat-like my steps, I cannot walk on the balcony while the camera is going. Even with remote operation, where I’m sitting inside with a tablet controlling everything, a moderate wind is enough to give me peanuts instead of points:
