Started taking some serious images last night, first time for ages and found out of focus stars in on corner. Obvious focus flop? The ring which secures the camera only has one retaining screw to secure it in place so there has to be movement with the weight of the camera.
Any ideas how I can remedy this? Please see image attached, out of focus is to the top left hand side.
Probably a bit more going on with this image as well.