I have strange green shadows on pictures done with ASI 585 MC Pro - no matter which gain, I tried gains from 60 to 300. The shadows are consequent, they are visible on each picture (less visible on pictures done with filters) - they are on the same place even after the rotation of camera, so they are nod connected with telescope and other optical equipment. They are more visible on pictures with less gain and longer exposure., I've clean up the glass, it did not helped. They are also visible on flat frames. Using flat frames somehow helps to remove them but they are still visible (the are somehow reverted - so in places where shadows were less visible on the light frames becomes more visible after stacking with use of flat frames). Any idea what I can do? Attached please find stacked light frames and stacked picture with all calibration frames (dark, bias, flat).
