The Great Hercules Cluster (Doug Azwell)

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

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The Great Hercules Cluster

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The Great Hercules Cluster

The Great Hercules Nebula, also known as NGC 6205 in the New General Catalogue or M13 in the Messier list, is a very large and prominent globular cluster on the east side box shaped chest of Hercules in that constellation. It is fairly easy to see if you know how to find Hercules in the night sky. The object was discovered in 1714 by Edmond Halley and catalogued by Charles Messier on June 1, 1764. Both men had been searching for comets at the time and both are famous for their contributions to the science of Astronomy in their own rights. This globular cluster is literally that a collection of many thousands of stars all gravitationally bound to one another. On occasion "globular stragglers" are kicked out of the inside of such clusters and into interstellar space due to the complex gravitational interactions within the cramped space. The stars in these objects are believed to form around the same time and are known to have similar content of metals which show up in their emission spectrum. This globular is around 22,000 light years away.

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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.

Status	Advanced success
Started	...
Astrometry.net job	4374090
PixInsight job	CHFSQ5XSK7521EZCOY3W4OFSAI5CTXPM
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h41m40s.329
RA (top/left)	16h40m23s.665
RA (top/right)	16h42m55s.197
RA (bottom/right)	16h42m57s.264
RA (bottom/left)	16h40m24s.995

Dec (center)	+36°27′34″.38
Dec (top/left)	+36°16′13″.70
Dec (top/right)	+36°15′46″.57
Dec (bottom/right)	+36°38′51″.31
Dec (bottom/left)	+36°39′18″.80

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The Great Hercules Cluster

The Great Hercules Cluster

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Image Index:

Contribution Index (beta):

The Great Hercules Cluster

The Great Hercules Cluster

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