Sh2 120 and 121 H-alpha RGB (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Sh2-120 · Sh2-121

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Sh2 120 and 121 H-alpha RGB

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Sh2 120 and 121 H-alpha RGB

As I was trying to figure our how large these were I plate solved Sh2 120 in TSX and found that 121 was right next to it and included. So here we have 120 in the upper right and 121 in the lower left. They are listed as Planetary Nebula in TSX and are pretty small.

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

A radio map of Sh 2-120 shows a shell-like structure around a central source. Very little information is available in the literature apart from this map.

According to a 1978 study, Sh 2-120, Sh 2-121, Sh 2-127 and Sh 2-128 are all at about the same distance of 7500 parsecs and are "probably distant HII regions associated with a spiral feature more distant than the Perseus arm".

Sh 2-120 appears behind the much closer dark nebula LDN 988, which has been informally called the Pincushion cloud.

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Status	Advanced success
Started	...
Astrometry.net job	3164441
PixInsight job	E16MA4DRQQAFJP2QSCO324LR9ZOTXSST
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h04m29s.55
RA (top/left)	21h05m50s.74
RA (top/right)	21h03m09s.10
RA (bottom/right)	21h03m08s.96
RA (bottom/left)	21h05m49s.27

Dec (center)	+49°45′31″.7
Dec (top/left)	+49°57′35″.7
Dec (top/right)	+49°57′44″.2
Dec (bottom/right)	+49°33′24″.9
Dec (bottom/left)	+49°33′19″.1

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Sh2 120 and 121 H-alpha RGB

Sh2 120 and 121 H-alpha RGB

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Sh2 120 and 121 H-alpha RGB

Sh2 120 and 121 H-alpha RGB

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