The Coma Star Cluster (Melotte 111) (Marc Mantha)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: 12 Com · 13 Com · 14 Com · 16 Com · 17 Com · HD107325 · HD107326 · HD107398 · HD107399 · HD107427 · HD107468 · HD107469 · HD107513 · HD107568 · HD107583 · HD107611 · HD107725 · HD107742 · HD107793 · HD107853 · HD107877 · HD107935 · HD108007 · HD108102 · HD108226 · HD108238 · HD108347 · HD108421 · HD108486 · HD108519 · And 27 more.

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The Coma Star Cluster (Melotte 111)

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The Coma Star Cluster (Melotte 111)

The Coma Star Cluster (Melotte 111)

Here is a type of target that I don't often image, an open cluster. Honestly, I thought they were boring. Its not as satisfying as processing galaxies or nebulae. It is so fast to process, it just feels weird. However, turns out I quite like how it turned out. I love the calm that emanates out of it. But when you take the time to look at the full resolution image and browse through it, you can find many small galaxies, far in the deepness of space. I always get lost and lose track of time and clear my mind looking through those.

A bit of details: Located at 280 ly away from us, the cluster contains about 40 brighter stars. Those stars make out a distinctive "V" shape in the Coma Berenices constellation. It covers an area of more than 7.5 degrees on the sky and it is approximately 450 million years old. Note that we don't see this the shape clearly on my image, even with the large field of view of my setup, the whole cluster doesn't fit into one frame.

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	7572538
PixInsight job	0KW0R21CEWSGRYJUJFQH4YNW9H7PDMEN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h24m37s.73
RA (top/left)	12h19m11s.77
RA (top/right)	12h19m50s.71
RA (bottom/right)	12h29m56s.72
RA (bottom/left)	12h29m33s.22

Dec (center)	+26°25′40″.7
Dec (top/left)	+27°48′10″.0
Dec (top/right)	+24°57′03″.5
Dec (bottom/right)	+25°02′16″.2
Dec (bottom/left)	+27°54′05″.6

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The Coma Star Cluster (Melotte 111)

The Coma Star Cluster (Melotte 111)

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Image Index:

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The Coma Star Cluster (Melotte 111)

The Coma Star Cluster (Melotte 111)

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