Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Great Cluster in Hercules  ·  Hercules globular cluster  ·  IC 4613  ·  IC 4614  ·  IC 4615  ·  IC 4616  ·  IC 4617  ·  M 13  ·  NGC 6196  ·  NGC 6197  ·  NGC 6205  ·  NGC 6207
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M13  The 'Great globular cluster in Hercules', Dave Erickson
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M13 The 'Great globular cluster in Hercules'

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M13  The 'Great globular cluster in Hercules', Dave Erickson
Powered byPixInsight

M13 The 'Great globular cluster in Hercules'

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Description

M13 the 'Great globular cluster in Hercules' is one of the finest globular clusters in the Northern hemesphere with an apparant magnitude of 5.8 and a diameter of some 23 arc minutes. This 24 billion years old globular is 22,200 light-years from Earth, is about 145 light-years in diameter, and it is composed of several hundred thousand stars. It is bright and large enough to be visible with the naked eye on clear dark nights.

There are a good number of faint galaxies in this image two of the brightest are NGC 6207, a 12th magnitude edge-on galaxy and a nearer small 15th magnitude galaxy IC 4617 that lies about halfway between the brighter NGC 6207 and M13.

North is to the left.

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