Was wondering if you guys can take a look at this PI WBPP image at the bottom. It has been cropped, DBE and Color Calibration have been applied. No noise reduction has been applied. What could be causing the orange halo's at the bottom of the stars and also what is causing the significant purple color blotches. I even did a manual preprocess to see if there might be stacking/calibration issues. Same thing. Could it be optical? Focus? As far as focus, I use SGP and it's auto focus routine. I get consistant V-curves and focus every 2 hours. V-curve usually in the 93% quality range. I checked with a batinov(sp?) and looked spot on. As far as optical, Tilt? I included a flats contour. Does this indicate significant tilt? Thanks for your replies in advance
55 X 180sec lights
25 dark flats
Camera : ASI2600 MC Pro, Gain 0(unity)
Edited by birddog99, 24 February 2021 - 10:15 PM.