M108 (Gary Imm) - AstroBin

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 108 · NGC 3556

M108

This Messier Object, also known as NGC 3556, is a spiral galaxy located 30 million light years away in the constellation of Ursa Major at a declination of +56 degrees. It is a magnitude 10.7 galaxy which spans 8 arc-minutes in our apparent view. This corresponds to a diameter of 70,000 light years.

We are seeing this galaxy almost edge-on, at an inclination of 75 degrees to our line of sight. Dark thick dust lanes are prominent throughout the disk. Blue star clusters and pink HII regions are evident in the outer arms while the central disk has a yellowish color and appears to be barred.

My apologies if the size, color, and brightness of this object scared you a bit when first it appeared on your screen. It is not quite the typical dim, obscure object that I normally image. But my original M108 image from 5 years ago was desperately poor in quality and crying out to be updated.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	5479141
PixInsight job	7HXUQ1XL6QS88HFT786KPFML43OLYJWF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h11m30s.848
RA (top/left)	11h12m40s.439
RA (top/right)	11h10m18s.844
RA (bottom/right)	11h10m21s.639
RA (bottom/left)	11h12m42s.395

Dec (center)	+55°40′21″.22
Dec (top/left)	+55°48′11″.49
Dec (top/right)	+55°47′44″.83
Dec (bottom/right)	+55°32′28″.99
Dec (bottom/left)	+55°32′54″.10

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M108

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M108

M108

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