11 Sept 2014

SH2-101 Tulip Nebula with colors

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.