Globular Cluster M3 (DoubleStarPhotography)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: HD119391 · M 3 · NGC 5272 · PGC 1826470 · PGC 1829643 · PGC 1830543 · PGC 1834325 · PGC 1835898 · PGC 1840051 · PGC 1841815 · PGC 1842087 · PGC 1843484 · PGC 3089228 · PGC 93729 · PGC 93730

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Globular Cluster M3

Revision title: Small changes to brightness & contrast

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Globular Cluster M3

Revision title: Small changes to brightness & contrast

M3 or Messier 3 is a globular cluster of over 500K stars located in the northern constellation of Canes Venatici. A number of faint distant galaxies can also be seen in this image.

M3 is notable for containing more variable stars than any other known cluster. The brightness of a variable star fluctuates with time. For some variable stars, their period relates to their intrinsic luminosity, so astronomers can use those stars’ brightness fluctuations to estimate their distances. This makes them extremely useful for measuring distances to deep-sky objects. M3 contains at least 274 variable stars. - (science.nasa.gov)

Fun fact - Globular cluster M3 was the first object in the Messier catalog to be discovered by Charles Messier himself. Messier spotted the cluster in 1764, mistaking it for a nebula without any stars. This misunderstanding of M3’s nature was corrected in 1784 when William Herschel was able to resolve the cluster’s individual stars.

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Title: Small changes to brightness & contrast

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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	9820625
PixInsight job	LXXAUQS0Z44HC0089C3FVG8TA8Y7UMYZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m12s.991
RA (top/left)	13h43m40s.663
RA (top/right)	13h43m45s.694
RA (bottom/right)	13h40m44s.482
RA (bottom/left)	13h40m40s.940

Dec (center)	+28°22′52″.20
Dec (top/left)	+28°02′33″.63
Dec (top/right)	+28°42′12″.76
Dec (bottom/right)	+28°43′10″.89
Dec (bottom/left)	+28°03′27″.10

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Globular Cluster M3

Revision title: Small changes to brightness & contrast

Globular Cluster M3

Revision title: Small changes to brightness & contrast

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Globular Cluster M3

Revision title: Small changes to brightness & contrast

Globular Cluster M3

Revision title: Small changes to brightness & contrast

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