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IC 5146, Cocoon Nebula

IC 5146 is a reflection/emission nebula in the constellation Cygnus. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of about 15 light years. [Wikipedia]

Click image for higher resolution version.

Optics: Stellarvue 115 f/7, Stellarvue 0.8x Flattener/Reducer
Camera: QSI 683wsg @ -25C
Filters: Astrodon Tru-Balance Gen 2 E Series LRGB
Mount: Losmandy G11-G2 with Ovision Worm
Guiding: OAG with Starlight Xpress Lodestar Auto Guider / PHD2 Guiding
Location: North Attleboro, Massachusetts
~20 hours exposure over 6 nights, 23-29 August 2014
L:R:G:B 10h10m:3h27m:3h10m:3h26m, 223 5-6 min subs binned 1:2:2:2
Captured with Sequence Generator Pro
Processed with PixInsight