Sh2 118 H-alpha RGB (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 74 Cyg · Sh2-118 · The star 74Cyg

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Sh2 118 H-alpha RGB

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Sh2 118 H-alpha RGB

Sh 2-118 is one of the largest nebulae in apparent size in the Sharpless catalog, but essentially nothing about it has been published in the scientific literature.

Examining this region in hydrogen-alpha suggests that Sh 2-118 is joined to the equally mysterious Sh 2-113, Sh 2-114 and Sh 2-123 in a long ridge of nebulosity south and south-east of Sh 2-117, the North American nebula. Sh 2-114, Sh 2-118 and Sh 2-123 have distance estimates of about 4000 parsecs. If this ridge is also at 4000 parsecs, it must be enormous.

From: http://galaxymap.org/cat/list/sharpless/111

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Description: Blue star brought out a little more

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Status	Advanced success
Started	...
Astrometry.net job	3077255
PixInsight job	PGCSDZN1DLMRQ6DEAVEK3TCMX88EU2HE
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h37m07s.78
RA (top/left)	21h39m58s.50
RA (top/right)	21h34m18s.25
RA (bottom/right)	21h34m19s.43
RA (bottom/left)	21h39m55s.40

Dec (center)	+40°13′15″.1
Dec (top/left)	+40°37′49″.2
Dec (top/right)	+40°38′02″.1
Dec (bottom/right)	+39°48′26″.8
Dec (bottom/left)	+39°48′11″.8

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Sh2 118 H-alpha RGB

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Sh2 118 H-alpha RGB

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