Hi,
I've processed my bubble nebula taken a while ago
(http://www.deep-sky-photography.com/Trash/BubblehaNoDarkHaO3Small.jpg)
Large http://www.deep-sky-photography.com/Trash/BubblehaNoDarkHaO3Big.jpg
Very nice... Why do diffraction spikes show red/ green...? is it to do with alignment of RG & B...? Just curious. Fantastic image anyway. I'm going to give this another try now I can do guiding...
Cheers, John