M27 is sort of the M51 of summer skies, I snap some images every year. Not
always long series, sometimes just to make sure that it is still there.
This year I managed to get 3.75 hours in one of our short nights, which
means that I imaged well into dawn, which is not really a problem with
Halpha images.
Taken from the middle of Berlin with Meade 10" ACF at f/7.3 on a G11 mount,
SXV-H9 camera, Baader Ha, OIII and RGB filters. 10x10 minutes Halpha, 8x10m
OIII, 3x5m each RGB combined to a wild mix of narrow band and RGB.
As M27 looks so much different through different filters I'll include the
links to several versions:
http://ccd-astronomy.de/temp4/M27colourgut.jpg
http://ccd-astronomy.de/temp4/M27Ha-10x10.jpg
http://ccd-astronomy.de/temp4/M27OIII-8x10.jpg
http://ccd-astronomy.de/temp4/M27RGB.jpg
Stefan