IC5146 - Cocoon Nebula in HaLRGB (Girish Muralidharan)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · IC 5146 · Sh2-125 · VdB147

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IC5146 - Cocoon Nebula in HaLRGB

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IC5146 - Cocoon Nebula in HaLRGB

My previous attempt at this was very wide field - decided to do this at a much smaller pixel scale given the intense star field in this area. Also, ended up using Ha data from my previous attempt to supplement.

Inside the Cocoon Nebula is a newly developing cluster of stars. The cosmic Cocoon on the lower left also punctuates a long trail of obscuring interstellar dust clouds to its right. Cataloged as IC 5146, the beautiful nebula is nearly 15 light-years wide, located some 3,300 light years away toward the northern constellation of the Swan (Cygnus). Like other star forming regions, it stands out in red, glowing, hydrogen gas excited by young, hot stars and blue, dust-reflected starlight at the edge of a nearly invisible molecular cloud. In fact, the bright star near the center of this nebula is likely only a few hundred thousand years old, powering the nebular glow as it slowly clears out a cavity in the molecular cloud's star forming dust and gas.

Ha - 12 x 1200' = 4 h

L - 45 x 180' ; 23 x 300' ; 8 x 600' = 5 h 35'

RGB - 18 x 120' ; 18 x 300' each = 2h each

Takahashi Refractors
Milwaukee Astronomical Society

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Status	Advanced success
Started	...
Astrometry.net job	4919908
PixInsight job	MAG4QOIHMN71LJL0N6H2ASBL9Q4LYPKH
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h53m27s.45
RA (top/left)	21h51m39s.52
RA (top/right)	21h55m15s.17
RA (bottom/right)	21h55m16s.64
RA (bottom/left)	21h51m39s.10

Dec (center)	+47°15′52″.2
Dec (top/left)	+47°01′54″.8
Dec (top/right)	+47°01′46″.4
Dec (bottom/right)	+47°29′42″.1
Dec (bottom/left)	+47°29′51″.6

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IC5146 - Cocoon Nebula in HaLRGB

IC5146 - Cocoon Nebula in HaLRGB

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IC5146 - Cocoon Nebula in HaLRGB

IC5146 - Cocoon Nebula in HaLRGB

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