Can’t attach fits / raw files here. But there seems to be some serious issues with Canon imaging at least with my 500D. Image taken with exactly the same settings with BackYardEOS show lot’s of stars and other details. With SGP I get only a few stars and mostly noise. RAW header seems to say that exposure time was 1s even though it was 120s on both programs. I seem to have same kind of problems with my QHY Minicam 5F every now and then.
What could be causing this?