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Cocoon Nebula & Barnard 168

Classification: Reflection / Emission Nebula, IC5146, C-19, Sh2-125, B168
Constellation: Cygnus (CYG)
Object Location: Ra 21h 54m 03s Dec +47° 20’34” (current)
Size & Distance: 10.0 x 10.0 Apx 3300 light years

Date & Location: 07-11-2015 Palomar Mountain, CA.
Exposure: LRGB, 105, 60, 60, 60, all @ 15min (bin 1x1)
Optics: Telescope Engineering Company APO110FL @ f/5.74, F/L 631mm.
Mount: Astro-Physics 1200 GTO / ATS 10x36 pier.
Camera: FLI-ML6303 @-30c / CFW2-7 / Guided by SBIG ST-I / w OAG.
Filters: Astrodon G2 LRGB
Software: MaxImDL 6.08, Photoshop CS5, CCDStack 2, Topaz Labs.

Notes: Sky conditions: Good seeing, No wind, Temp 60°
Image Field of view is 100 x 151 arcmin.

IC 5146 (also Caldwell 19, Sh 2-125) The Cocoon Nebula is a reflection/emission nebula in the constellation Cygnus. The NGC description refers to IC 5146 as a open cluster and a bright and dark nebula. The cluster is also known as Collinder 470.  The nebula is about 12 arcmins across, which is equivalent to a span of 15 light years. When viewing IC 5146, dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon.