This spiral galaxy lies in
Cepheus, near the border
with Cygnus. Several
supernovae have been
detected within it during
the last 100 years. The
first of these, in 1917, led
to the studies that
eventually proved these
"spiral nebulae" were
separate island universes
(ie galaxies), and not just
nebulae within our own
Milky Way Galaxy.
OGS 10" RC @ f/ 5.7
SBIG ST10XME
CFW8
LRGB:
L= 5 min x 22, 1x1
R= 5 min x 5, 2x2
G= 5 min x 6, 2x2
B= 5 min x 5, 2x2

Processed with CCDsoft
and Adobe PS
                         NGC 6946
            Click on image to enlarge