Target: IC5146 - The Cocoon Nebula
Telescope: Orion 8" f/4.9
Exposures: L:R:G:B=140:30:30:30 (L=1x1,RGB=3x3)
Framing: North is Up
Sensor Temp: -15C
Location: Mocksville, NC
Start Time: 9:30PM
End Time: 2:30AM
Captured with Sequence Generator Pro, stacked using DeepSkyStacker, processed in Photoshop.
(also Caldwell 19
, Sh 2-125
, and the Cocoon Nebula
) is a reflection
and Caldwell object
in the constellation Cygnus
. IC 5146 refers specifically to the star cluster and Sh2-125 to the nebula.
It shines at magnitude +10.0
Its celestial coordinates are RA 21h 53.5m, dec+47° 16′. It is located near the naked-eye star Pi Cygni
, the open cluster NGC 7209
, and the bright open cluster M39
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 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.