The Cocoon Nebula in RGBHa

After capturing the remaining green and blue subs on November 4th, I was able to complete the RGBHa composite of the Cocoon nebula.  I had already shot the 1 hour of Ha and most of the color subs before the clouds moved in on October 19th.

IC 5146 (also known as Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470. It shines at magnitude +10.0/+9.3/+7.2. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years. (Wikipedia)

IC 5146 - The Cocoon Nebula in RGBHa
WO GT102 (4", f/5.6)
ASI1600mm 20x60sec ea. RGB; 15x240sec Ha