M-13 The Great Cluster in Hercules (Randal Healey)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: Great Cluster in Hercules · M 13 · NGC 6205

M-13 The Great Cluster in Hercules, Randal Healey

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M-13 The Great Cluster in Hercules

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M-13 The Great Cluster in Hercules

The Great Cluster in the constellation Hercules – also known as Messier 13, or M13 – is considered to be the finest globular cluster in the northern half of the sky. It’s found within the constellation Hercules – between the two brightest stars of northern spring and summer, Vega and Arcturus.

At mid-northern latitudes, the M13 cluster can be found in the sky for at least part of the night all year round. It’s up part of the night in April, and all night long in May, June and July. In August and September the Hercules cluster is still very much a night owl, staying up till after midnight.

When you gaze at M13 or other globulars, you are looking at stars that are thought to be 12 to 13 billion years old. That’s almost as old as the universe.

M13 is not the easiest of sky objects to spot, but once you find it, you’ll be able to go back to it again and again. It’s located in the constellation Hercules, between summertime’s two brightest stars, Vega and Arcturus.

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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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

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Astrometry.net job	2736949
PixInsight job	n/a
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M-13 The Great Cluster in Hercules

M-13 The Great Cluster in Hercules

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M-13 The Great Cluster in Hercules

M-13 The Great Cluster in Hercules

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