It seems the calibration with the flats didn't work that well. Tinted at the left and the right border (red and blue).
Workflow:
- Removal of worst satellite Frames
- Calibration with Flats
- Registering
- total of 221 frames to be processed
- Stacking
- Cropping, Background extraction and denoising in GraXpert
- Aberration Removal (Siril Script)
- Photometric Color Correction
- Stretching using ASinH Algorithm
- Slight S-Curve adjustments
- Slight Saturation adjustment