NGC 281 - 2020 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281 · PGC 137230 · PGC 137241 · PGC 137282 · PGC 137297 · PGC 137305 · PGC 137312 · Sh2-184

NGC 281 - 2020

This object, also known as Sh2-184, is a large emission nebula located 10,000 light years away in the Cassiopeia constellation at a declination of +57 degrees. The open star cluster at the center of the image, IC 1590, is ionizing and illuminating the surrounding gas. The large 8th magnitude star at the center, B1, has four companion stars at distances between 1 and 16 arcsec.

Strong stellar winds from these stars are sculpting numerous elephant trunk projections along the outside of the nebula, with all of the trunks pointing towards the central star cluster. Numerous Bok globules are seen in silhouette against the nebula as well as a large dust cloud, also eroded by stellar winds. It is believed that star formation is occurring in these dense clouds of dust. The nebula spans 80 light years.

I especially like the small, intricate black cloud structures just above the central cluster. I also find the large vertical cloud structure on the left side of the image to be very interesting. The erosion of this cloud appears to be symmetric from our perspective, which suggests to me that this cloud is between us and the cluster and that we looking at the back side of this specific cloud.

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Texas Astronomy
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Status	Advanced success
Started	...
Astrometry.net job	4123921
PixInsight job	8DECGZA6RXRFZON8HYYZ8K59LSS79POT
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h52m33s.475
RA (top/left)	00h54m56s.673
RA (top/right)	00h55m36s.705
RA (bottom/right)	00h50m06s.505
RA (bottom/left)	00h49m34s.310

Dec (center)	+56°38′43″.88
Dec (top/left)	+56°08′59″.80
Dec (top/right)	+57°04′13″.97
Dec (bottom/right)	+57°08′17″.87
Dec (bottom/left)	+56°12′57″.77

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NGC 281 - 2020

NGC 281 - 2020

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NGC 281 - 2020

NGC 281 - 2020

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