I recently bought a brand new Orion 8" RC astrograph and I've been struggling to get any good images out if it. The scope was collimated by a very experienced person, so this is not the issue. The problem is that the stars look quite bloated. When carefully adjusting the focus it looks like the stars are about to get into focus, but then they turn into blobs again. Here is a snapshot taken directly from PixInsight work window with scale 1:1. This shows absolutely the best focus I am able to achieve. I am using ZWO ASI071MC Pro. There is also quite a variation from the center of the filed to the corners (will upload samples in the next posts). Is this is normal, or I've got a lemon? Please share your thoughts.