M 15 - Globular Cluster in Pegasus (Monty Chandler)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: HD204571 · HD204712 · HD204844 · HD204862 · HD205061 · M 15 · NGC 7068 · NGC 7078 · PK065-27.1

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M 15 - Globular Cluster in Pegasus

Link: https://montychandler.smugmug.com/Astrophotography/The-Heavans/i-3KSxzdx/A

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M 15 - Globular Cluster in Pegasus

Link: https://montychandler.smugmug.com/Astrophotography/The-Heavans/i-3KSxzdx/A

Messier 15 (M15) is a globular cluster of stars in the constellation Pegasus, located about 32,620 light-years from Earth. It is one of the oldest known globular clusters, estimated to be around 12.5 billion years old. M15 is also one of the densest globular clusters, with most of its mass concentrated at its core.

M15 is part of a halo of nearly 150 globular clusters that surround the Milky Way galaxy. Each cluster is a spherical group of hundreds of thousands of ancient stars, with M15 containing both hot blue stars and cooler golden stars. The brightest stars in M15 have an apparent magnitude of 12.6, an absolute magnitude of -2.8, and a luminosity that is 1,000 times that of the Sun.

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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	9829419
PixInsight job	BJAQ8Q7M81EUFNL1HBPY4438MZC2E7VG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h29m58s.191
RA (top/left)	21h33m45s.285
RA (top/right)	21h28m34s.591
RA (bottom/right)	21h26m10s.517
RA (bottom/left)	21h31m20s.735

Dec (center)	+12°09′49″.70
Dec (top/left)	+12°08′24″.72
Dec (top/right)	+13°01′30″.92
Dec (bottom/right)	+12°10′57″.79
Dec (bottom/left)	+11°18′01″.99

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M 15 - Globular Cluster in Pegasus

M 15 - Globular Cluster in Pegasus

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Image Index:

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M 15 - Globular Cluster in Pegasus

M 15 - Globular Cluster in Pegasus

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