I've been evaluating PI and worked through most of the tutorials so I thought I'd try my hand on my own data, poor as it is. I obtained some M20 imagery last night, calibrated and stacked in a separate program (still can't get PI to calibrate my imagery right) and when I create the RGB image, I get red/orange halos around many of the brighter stars. The LRGB image of course has the same artifacts. I can't see any blooming in the individual images that would cause the halos.
What am I doing wrong? I can create the LRGB image in my old standby program and I get a decent image with no halos.
tnx
John
