The Great Globular in Hercules (Doug Azwell)

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

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The Great Globular in Hercules

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The Great Globular in Hercules

The Great Globular in Hercules, also known as Messier Object 13 (or M13) is a large globular cluster in the western chest region of he central box of the constellation of Hercules. Discovered by Charles Messier, the French astronomer during his sky search for comets, on June 1, 1714. It is one of the best examples of a globular cluster in the northern hemisphere. It is visible in the early evening sky during the later part of the winter and throughout most of the spring. As most globular clusters form nearly all of their stars have strikingly similar chemical makeup (or termed metallicity by astronomers) indicating they originated from the same gas cloud during formation. Stars of various spectral type, or surface temperatures, are clearly visible in this picture giving excellent color to these stellar jewels of the night sky. The spring and early summer sky in the northern hemisphere is dotted with both globular and open clusters and this time of year is an excellent time to capture these objects.

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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	4373150
PixInsight job	P58CA8SF3CLXA5MHAX9MVTGESLI38HU4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h41m40s.238
RA (top/left)	16h40m23s.665
RA (top/right)	16h42m55s.208
RA (bottom/right)	16h42m57s.286
RA (bottom/left)	16h40m24s.956

Dec (center)	+36°27′33″.48
Dec (top/left)	+36°16′13″.95
Dec (top/right)	+36°15′46″.55
Dec (bottom/right)	+36°38′51″.40
Dec (bottom/left)	+36°39′19″.23

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The Great Globular in Hercules

The Great Globular in Hercules

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The Great Globular in Hercules

The Great Globular in Hercules

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