Deep Sky-M57 22/6/2014

Red channel stacked 40 frames over 60 frames with gain 85% exposure 10s

Green channel 30 frames over 60 frames with gain 85% exposure 10s

Blue channel stacked 35 frames over 60 frames with gain 85% exposure 10s

Luminance channel (IRCut/UVCut) stacked 140 frames over 160frames with gain 85% exposure 10s

RGB combination

LRGB combination

LRGB after contrast/brightness balance

 

M57, C8 f/10 CGEM Mount, CCD IMG0H cooled 1/4" size ATIK manual filter wheel with R G B ccd Baader filters, all channels alligned with registax and the final image processed with IRIS, Emanuele Baldani.