Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 3  ·  NGC 5263  ·  NGC 5272
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M3; Canes Venatici, Thomas V. Davis
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M3; Canes Venatici

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M3; Canes Venatici, Thomas V. Davis
Powered byPixInsight

M3; Canes Venatici

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Description

M3; Canes Venatici

Astro Systeme Austria N12 f/3.5 astrograph

KAI-11000M

Total Exposure 2 Hours; LRGB  30:30:30:30 minutes; unbinned

April 16-17, 2007;  Inkom, ID

Comments: Messier 3 is one of the most outstanding globular clusters, containing an estimated half million stars. It is famous for the large number of variable stars discovered in it.  This cluster was the first 'original' discovery by Charles Messier when he logged it on May 3rd, 1764. At that time it was the 76th deep sky object ever observed by human eyes (and apparatus), although at that time, it was only the 55th known nebulous object, while 21 objects had been forgotten again, according to the sources. (from SEDS.org)

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M3; Canes Venatici, Thomas V. Davis