This was taken last season but I didn't process this because I remembered that I had no blue channel taken... There was but only about 20 minutes which was less than quarter of the other channels.
Total exposure is: 13 h
Ha = 19 * 1800" = 9h 30min
R = 12 * 450" = 90 min
G = 11 * 450" = 82,5 min
B = 5 * 450" = 22,5 min
Full size on Astrobin.
11 Sept 2014
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