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Contains:  Cocoon nebula, IC 5146
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Cocoon Nebula (aka. IC 5146), 


            Miles Zhou
Cocoon Nebula (aka. IC 5146)
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Cocoon Nebula (aka. IC 5146)

Technical card

Dates:Sept. 30, 2019

Frames: 103x600"

Integration: 17.2 hours

Avg. Moon age: 2.00 days

Avg. Moon phase: 4.46%

Basic astrometry details job: 3216106

RA center: 21h 51' 59"

DEC center: +47° 20' 31"

Pixel scale: 1.056 arcsec/pixel

Orientation: 1.264 degrees

Field radius: 0.578 degrees

Resolution: 3231x2251

Locations: Deep Sky West, Rowe, New Mexico, United States

Data source: Amateur hosting facility

Remote source: DeepSkyWest


IC 5146, also known as Cocoon Nebula, a reflection nebula, and emission nebula
Constellation Cygnus
Designations Cocoon Nebula, Caldwell 19, Sh 2-125

IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39 (not shown). The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago (pretty young, wasn't it?); 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. This is a pure RGB rendition without a luminance which rendered the dark nebula well.



Miles Zhou
License: None (All rights reserved)

Sky plot

Sky plot


Cocoon Nebula (aka. IC 5146), 


            Miles Zhou

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