32 31 30 29 28 27 26 25 24

IC 5146- Cocoon



IC 5146 and Sh2-125: Cocoon Nebula in Cygnus

RA = 21 hrs 53 min; Dec = 47 deg 16 min

Date & Site:

Imaged on 5/22/2012; Palomar Mountain, CA

Conditions: mild wind; 62 degrees; average seeing


Telescope: Celestron C9.25 SCT at F6.3 (fl= 1480mm)
Mount: Losmandy G-11 with Gemini
Camera: ST-10XME; CFW10 with Astrodon LRGB Gen I Filters; Internally guided


Exposures: 120 min of Luminance (10 min subs) and 30 min RGB (5 min subs)

FOV = 32 x 22 arc minutes

Inside the Cocoon Nebula is a newly developing cluster of stars. The bright star near the center of this nebula is likely only a few hundred thousand years old. The designation IC 5146 refers to the star cluster while the nebula itself is cataloged as Sharpless 2-125.

Distance: 4,000 light years away

Back to Images