Cocoon Nebula (IC5146)

Buy a Print From the 2011 Oregon Star Party, the Cocoon Nebula in Cygnus both emits and reflects light. The red, flower-like main part is mostly hydrogen, but there is also bluish light around the edges that is caused by reflections of light from the central star. The dark path leading to the main part is a “dust lane” that partially blocks the light of stars behind it. The nebula is about 4,000 light years from Earth.  Scope: AT111EDT at f/5.6 Mount: AP Mach1 Camera: QSI 583 at –15C Exposure: 10 x 480s H-alpha, 30 x 120s L, 10 x […]