Sh2 76 HA RGB (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Aquila (Aql) · Contains: Sh2-76

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Sh2 76 HA RGB

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Sh2 76 HA RGB

From galaxymap:

This nebula, located well above the galactic plane in the direction of the Aquila Rift dust clouds, is dim at visual frequencies but appears as a large bright bubble in infrared, as can be seen in this MSX image, and is also prominent at radio frequencies.

The nebula lies in the same approximate direction as the radio source W45, but Westerhout noted that the identification of this radio source with Sh 2-76 was "probably incorrect".

On the other hand, Avedisova includes W45 and Sh 2-76 together in star formation region SFR 40.44+2.45 along with 5 masers and several other HII regions visible in infrared.

There are two apparently unrelated water masers in this direction. Ammonia has been detected in the water maser S76E. The water maser S76W is one of the strongest known. Interestingly, the 1980 paper that identified these masers concluded that

S76W may be a "cocoon" of dust of a rather new O/B star or cluster ... S76W is an exceptional maser and is worthy of additional investigation. [1]

However, there has not been much published since about S76W specifically.

Original
Final
B

B

Description: HA RGB cropped to 1000x1000 px. Colored with 3D LUT "Pale Cold and Warmth" LUT.

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Status	Advanced success
Started	...
Astrometry.net job	3753623
PixInsight job	5Y8WG8XWOLWVMZWGFNQMTMV0OQE9D0M0
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h56m24s.51
RA (top/left)	18h57m05s.78
RA (top/right)	18h55m43s.57
RA (bottom/right)	18h55m43s.31
RA (bottom/left)	18h57m05s.41

Dec (center)	+07°49′13″.9
Dec (top/left)	+07°59′21″.9
Dec (top/right)	+07°59′26″.5
Dec (bottom/right)	+07°39′05″.10
Dec (bottom/left)	+07°39′00″.10

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Sh2 76 HA RGB

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