Sh2-180 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Sh2-180

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Sh2-180

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Sh2-180

This object is a rarely imaged HII emission nebula located 20,000 light years away in the constellation of Cassiopeia at a declination of +63 degrees. The nebula spans about 20 arc-minutes in our apparent view, which corresponds to a diameter of 100 light years.

The structure of the HII emission is interesting in that there appears to be a faint broken ring of emission, with several emission arcs outside of the ring but concentric to it. But the structure is very loose, to the point that there could be no definitive pattern here at all. Based on its size, it is possible that this object is an ancient supernova remnant, although its structure doesn't look quite right to me for it to be one.

I could find little information in the literature on this object.

Sharpless2 Objects
ZWO ASI183/QHY183
The refractors!
Cloudy Nights
Open Star Clusters
Takahashi Refractors

HII-Dominated Nebulae
Sharpless Catalog (200/313)

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Status	Advanced success
Started	...
Astrometry.net job	2997288
PixInsight job	M9H7R43YWFK9CVK5UH3806I69G8KYQ9J
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h48m29s.387
RA (top/left)	00h46m19s.594
RA (top/right)	00h46m27s.150
RA (bottom/right)	00h50m35s.910
RA (bottom/left)	00h50m34s.792

Dec (center)	+63°04′39″.60
Dec (top/left)	+63°26′16″.58
Dec (top/right)	+62°42′37″.65
Dec (bottom/right)	+62°42′56″.77
Dec (bottom/left)	+63°26′34″.98

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