Globular cluster M3 (Thomas LELU)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: HD119025 · HD119081 · HD119391 · HD119748 · M 3 · NGC 5263 · NGC 5272

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Globular cluster M3

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Globular cluster M3

M3 is one of the largest globular clusters, with an estimated population of half a million stars.
But what makes M3 really special is the unusually high number of variable stars it contains. We continue to discover and to date there are no less than 274.

The cluster's distance is estimated at about 33,300 light-years (it is far beyond the center of our Galaxy) and its age is 11.39 billion years.

Its luminosity is estimated at 300,000 times that of our Sun. Finally, this swarm of stars is approaching us at a rate of 147.6 km/sec!

When the light emitted from this globular cluster "left" to strike my photographic sensor, we are in the age of carved stone: the Paleolithic!
While hunter-gatherers decorated certain caves in the south of France, the photons began their journey from this cluster to arrive 33,300 years later in my photographic sensor.

Original
Final
C

Star clusters

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	5773596
PixInsight job	D8I0US3DGS116FZ3LBJGJQVA7Z13MRBK
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m11s.60
RA (top/left)	13h38m28s.15
RA (top/right)	13h46m16s.16
RA (bottom/right)	13h45m58s.28
RA (bottom/left)	13h38m03s.87

Dec (center)	+28°22′51″.1
Dec (top/left)	+27°36′21″.3
Dec (top/right)	+27°41′51″.1
Dec (bottom/right)	+29°08′57″.9
Dec (bottom/left)	+29°03′25″.8

Image Index:

Contribution Index (beta):

Globular cluster M3

Globular cluster M3

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Image Index:

Contribution Index (beta):

Globular cluster M3

Globular cluster M3

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these collections

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