IC 5146

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Description: A dense cloud of gas and dust has collapsed to form a cluster of young stars (IC5146). Most of these stars are only about a million years old. Their radiation generates the red emission areas and blue reflection areas in the remaining gas and dust. This red emission nebula is known as The Cocoon Nebula. An area of dust runs from the Cocoon down to the lower right in this image. It is obscuring the background stars. A small, blue reflection nebula is visible below the Cocoon Nebula.
Constellation: Cygnus
Distance: About 3000 light years
Apparent Size: 10' x 12'
Date: 22 august; 17, 21, 25, 26 september 2006
Equipment: AP155 @ f/7, ST10XME, AP1200
Exposure: RGB: 3.5-3.75-5.5 hours unbinned, Astrodons