M 57 - LRGB

19th - 21st and 27th July 2013
Newtonian 250mm with ASA Reducer @f/3.6, Mesu Mount 200
MI G2-8300FW CCD camera @-25°C
LRGB with L=Hα+ L, R = Hα+R, G= OIII+G, B =OIII+B; Hα 3x600s+39x900s, OIII 14x300s, L 8x600s, RGB = 9/9/11x300s (overall 15h10m)
Rhein-Main area, Germany
North is on the upper side of the image