Hi all,
Along with being useless at LRGB/CRGB imaging I'm also useless at stacking RGB comet images. I can never get rid of all the stars, to do a stack which shows static stars + stacked comet
As I understand the theory, one stack is on the comet with median and sigma clipping to remove the stars, the other stack is on stars with similar to remove the comet, then the two stacks are layered. Layering isn't a problem but getting rid of the stars/comet is grrrrr
See attached for my best attempt at a 20x180s stack, done in PI using median, windsorised sigma clipping. I get the same result in CCDStack using sigma clipping and mean stack. I've fiddled with the sigma clipping values quite a lot and haven't managed to remove the stars.
What am I doing wrong ?! Please!
Regards,
Roger.