IC5146 Cocoon Nebula (Jerry Macon)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon nebula · IC 5146 · PGC 167590 · PGC 167593 · PGC 167597 · Sh2-125 · VdB147

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IC5146 Cocoon Nebula

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IC5146 Cocoon Nebula

Imaged on nights of 2018-10-19, 2018-10-20, 2018-21-19, 2018-11-25, 2018-11-26.

The RGB were taken on the AG12+ASI1600MM at .70 asec/pix, the L on TV127is+ASI183MM at .75 asec/pix, and RGB on AG12+ASI183MM at .43 asec/pix. Using L from the TV NP127is refractor effectively eliminates the spikes from the AG12.

IC 5146 Cocoon Nebula is a reflection/emission nebula 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. It shines at magnitude +10.0. 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. (Wikipedia)

Planetary Nebulae

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Status	Advanced success
Started	...
PixInsight job	93HABU9RGLS5CN4SLI132QE7U7ROPC72
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h53m28s.936
RA (top/left)	21h51m35s.300
RA (top/right)	21h55m16s.610
RA (bottom/right)	21h55m23s.810
RA (bottom/left)	21h51m40s.881

Dec (center)	+47°16′07″.90
Dec (top/left)	+47°04′04″.95
Dec (top/right)	+47°02′23″.54
Dec (bottom/right)	+47°28′03″.21
Dec (bottom/left)	+47°29′44″.55

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IC5146 Cocoon Nebula

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