5146 Cocoon Nebula in Cygnus
10" f/8 RC on Asto-Physics 1200GTO; SBIG ST-10XME, Astrodon
filters; Astro-Physics 80X900 guidescope.
LRGB - 3 x 180s; Expose/process in Maxim / Photoshop.
08 October 2010; Chiefland Astronomy Village
IC 5146, also Caldwell 19, and Sh2-125, Cocoon Nebula, is a
reflection/emission nebula and Caldwell object in the constellation
Cygnus. IC 5146 is a star cluster and the nebula is Sh2-125. The
cluster is about 4,000 light years away, and the central star that
lights it formed about 100,000 years ago. The nebula has a span of
about 15 light years. (from Wikipedia website entry)