Quote:
Originally Posted by skysurfer
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.
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) ?
|
White T shirt is most likely going to work better. Monochrome? Yes probably as a flat is an image showing the unevenness of illumination across the frame from vignetting and perhaps uneven sensor performance.
Monochrome should show that.
With a CCD my procedure is to take several flats with a white t shirt and same focus as the imaging and same aperture. Then average combine them.
A shot of a white wall and one flat may be risky especially on light polluted main exposures.
Greg.