Cocoon Nebula

IC 5146 + Sharpless 125 is a cluster (80 members) with an emission and reflection nebula that surrounds the star BD +46°3474 and is 3900 light years away in the constellation of Cygnus. The B-Type star BD +46°3474 that illuminates the region, is a foreground object to the large molecular cloud complex. The dark regions trailing away from the Cocoon are the Lynd's Dark Nebula 1035 and 1045 (LDN 1962). The dark nebula was also catalogued as Barnard 168. This image records a 2.5-degree field.

5nm Narrowband filters; H-alpha: O-III: S-II - 30:30:30 minutes x 6 minute subframe, binned 1x1. Takahashi Epsilon-180, SBIG STL-6303E CCD camera, Losmandy Gemini G-11 EQ mount, ATMoB Clubhouse, Westford, MA, 5 September 2010.