Barred Spiral "Propeller" Galaxy NGC 7479 (Bill McLaughlin)

Barred Spiral "Propeller" Galaxy NGC 7479

Sometimes called the "Propeller" or the "Superman" galaxy, NGC 7479 is located in Pegasus and is one of the more distinct barred spirals. Discovered by William Herschel in 1784, it is a Seyfert galaxy with a lot of starburst activity. It is also remarkable because in radio images, small "counter arms" open in the opposite direction compared to the prominent optical arms. This plus the asymmetrical arms and the star formation activity are thought to have been caused by a merger with another, smaller galaxy. Distance is 105 Million Light Years and it's apparent size is moderately small at 4.1 x 3.1 arc min.

Details of the radio "counter arms" can be found here:

Sofia Press Release

Imaged over 12 nights between October 16th and November 11th with my 14 inch CDK at SkiesAway Observatory in California.

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Title: Barred Spiral "Propeller" Galaxy NGC 7479

Description: Sometimes called the "Propeller" or the "Superman" galaxy, NGC 7479 is located in Pegasus and is one of the more distinct barred spirals. Discovered by William Herschel in 1784, it is a Seyfert galaxy with a lot of starburst activity. It is also remarkable because in radio images, small "counter arms" open in the opposite direction compared to the prominent optical arms. This plus the asymmetrical arms and the star formation activity are thought to have been caused by a merger with another, smaller galaxy. Distance is 105 Million Light Years and it's apparent size is moderately small at 4.1 x 3.1 arc min.

Imaged over 12 nights between October 16th and November 11th with my 14 inch CDK at SkiesAway Observatory in California.

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Status	Advanced success
Started	...
Astrometry.net job	8854699
PixInsight job	2HYQU0QDXVTN5VZA3GZU97UQV4QB2JVF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h05m00s.511
RA (top/left)	23h04m26s.734
RA (top/right)	23h04m28s.219
RA (bottom/right)	23h05m34s.235
RA (bottom/left)	23h05m32s.862

Dec (center)	+12°17′43″.96
Dec (top/left)	+12°27′27″.16
Dec (top/right)	+12°07′43″.43
Dec (bottom/right)	+12°08′00″.66
Dec (bottom/left)	+12°27′44″.34

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