|
Faint galaxies are very difficult to imaging.
You are sure about flats- vignetting and light pollution in the first photo.
It seems you have the same colors with photo number 2, that is clean from light pollution. Here, it seems a lack of data to better colors.
The third would be your better photo, if less over stretched. They are very faint to show much colors and great shape with low time exposure time.
|