Globular Cluster Messier 3 (M3) (Tom Wildoner)

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

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Globular Cluster Messier 3 (M3)

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Globular Cluster Messier 3 (M3)

Messier 3 (also known as M3 or NGC 5272) is a globular cluster found in the northern constellation of Canes Venatici. M3 is one of the three brightest globular clusters in the Northern hemisphere (along with M13 and M5). This cluster is made up of around 500,000 stars. It is estimated to be 11.4 billion years old. It is located at a distance of about 33,900 light-years away from Earth.

Observation data (J2000 epoch)
Class: VI
Constellation: Canes Venatici
Right ascension: 13h 42m 11.62s
Declination: +28° 22′ 38.2″
Distance: 33.9 kly
Apparent magnitude (V): 6.39
Apparent dimensions (V): 18′.0

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at -10C, Celestron CGEM-DX mount, 90 x 60 second guided exposures, darks from the library and flats at the end of imaging, focused with a ZWO EAF, controlled with a ZWO ASIAir Pro. Processed using PixInsight and DSS. Image Date: February 15, 2023. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

The refractors!
Globular Star Clusters
Messier Objects

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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.

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	7582527
PixInsight job	L055XY8QO5CO7QBA58HRR0D8G01LK2AM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h42m10s.153
RA (top/left)	13h39m36s.170
RA (top/right)	13h39m58s.882
RA (bottom/right)	13h44m42s.689
RA (bottom/left)	13h44m23s.168

Dec (center)	+28°23′16″.10
Dec (top/left)	+29°08′26″.57
Dec (top/right)	+27°34′41″.43
Dec (bottom/right)	+27°37′50″.51
Dec (bottom/left)	+29°11′29″.67

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Globular Cluster Messier 3 (M3)

Globular Cluster Messier 3 (M3)

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Globular Cluster Messier 3 (M3)

Globular Cluster Messier 3 (M3)

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