Quote:
Originally Posted by gregbradley
I would not be adjusting colour before stacking. Wrong sequence. Stack then adjust for colour. You probably are saturating light pollution (its usually greenish). Also it looks like your flats are not flattening the image properly.
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No I don't adjust any colors before stacking, I put the original CR2's into DSS and AFTER stacking I adjust colors.
An idea might indeed be to process the fresh 'autosave.tiff' with PS or DT. Indeed it is TIFF.
Quote:
Originally Posted by gregbradley
What is your procedure for doing flats? I have found that flats are more important in light polluted areas than in dark skies.
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Take a picture of a white wall from close distance but equally lit with the same aperture as the sky shots and focus to infinity and AF off to prevent any details. Only for showing vignetting.
Sometimes I put a white T-shirt over the lens.
Should I convert the flats to monochrome (i.e. B&W photos) ?