sample raw frame, 1 min at f/4, iso1600, 50mm/1.4 smc takumar lens.
same single frame, contrast/curves/colors
same frame, 20 images stacked for noise reduction, different set of contrast/curves/color adjust
Milky Way - Altair to Sagittarius, 20mm at f/4, iso 1600, single unprocessed frame
Milky Way - Altair to Sagittarius, 20mm at f/4, iso 1600, single frame with curves, tint.
showing my periodic error, 20 minutes with intentional polar misalignment