CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
Seriously speaking, for the next major singastro public event, you should print out your photographs and have them displayed for the enjoyment of the public.
I see you're doing separate RGBL exposures, have you tried refocussing between shots to deal with CA?
I see there is also some lateral CA or spherochromatism. I'm not aware of much you can do about that, other than play with curves, or try some star masking.
Hi Croys, good advice! Yes refocus the blue channel will lessen the CA issue, in fact i only noticed this problem after half way through the blue filter captures, the telltale is the bloated bright stars (not apparent initially, because it only appear in shades of grey on the monitor). I was using the Astronomik RGB filters, and they are parfocal, didn't notice this problem while imaging with Baby Q, the tak FSQ series are definitely more well corrected.
