Hallo!
I am new to this forum and relatively new to Pixinsight, and I am just trying to reprocess some comet data according to the recipes by Warren A Keller in his book.
I have registered all subexposures and performed the Comet Alignment. Then I try to use Image Integration to the comet aligned files. In order to optimize star rejection, I have lowered the clipping factor for high pixel values to 0.000, all other parameters are left unchanged. Now the problem is as follows: If I choose a region of interest, everything works fine; most of the star trails are smeared out and the comet is nicely pictured. However, when I apply the same process to the whole picture, the resulting image is extremely bright (also the background). Applying STF to this image causes the STF sliders for RGB to jump to the right (approx. to 80 % position!) and the star trails as well as the comet appear much to bright and noisy. The problem does not occur, if I use a region of interest which is smaller than the whole image by just 10 (!) pixels.
I would be grateful to learn how I could successfully apply the process working fine on a region of interest nearly as large as the original image to the whole image...
Best regards
Gilbert
