Hi Kuz,
I have seen this problem occur once before when I was using some borrowed cameras to test. When looking at your listing I assume that you are using the Esprit 80 with the ASI294MC Pro. If this is right the pixel ratio is 2.39 which could lead to Over exposure especially with bright stars. Using a reducer field flattener could make it worse.
Hope this helps, I may be completely wrong but the only time I have seen subs similar to this is when I had the pixel ratio above 2
- Vin
