This was a new one for me, specular reflections, i.e., stray light from a bright star, that is trying to ruin my image (lower left corner). This is just a few calibrated frames of the Pacman nebula which I took with the new ZWO ASI294MM Pro using a chroma Ha filter on an 80 mm apo triple refractor (300s subs). I used darks which got rid of the amp glow, as well as dark flats and flats. At first I thought this was an error on my part but realized it was probably stray light from Schedar (mag 2.2). Good news is that it is not impinging upon the nebula itself but bad news it is nearly impossible to remove. I see my options as cropping it or perhaps remove the stars and use clone stamp and then put the stars back. It was suggested that perhaps rotating the camera might help.
I'm curious if others have had this problem to deal with and what did you try.