IC5146 (Cocoon nebula) wide field in Cygnus
Telescope: Canon EF 135mm f/2L USM Telephoto lens (f/2.8 stopped)
Camera: Baader modified Canon 400D, 800 iso, RAW mode
- Mount: Astrotrac with polar scope
- Integration: 30 x 120 sec, (21 bias, 21 dark, 21 flat)
- Date, Location, Temp/Software: August 2012, Grosseto (Italy), 22°C/MaxIm-DL, PixInsight, PhotoShop
- Click HERE for solved map
IC 5146 is a beautiful emission and reflection cloud that surrounds the illuminating central star BD +46°3474. The circular HII region is catalogued separately as Sharpless 125. The powerful B-type star, BD +46°3474 is the dominant illumination source of IC 5146 and lies in the foreground of a large molecular cloud complex. The colorful nebula IC 5146 is located at the eastern end of a series of dark clouds known as LDN 1035 and LDN 1045 (Lynds 1962) (also catalogued as Barnard 168). The central cluster of IC 5146 is a very young open cluster with a median age of about one million years. The cluster is so young that many of its members are still pre-main sequence stars.