Melotte 111 (Damien Cannane)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: NGC 4494 · The star 12Com · The star 13Com · The star 14Com · The star 16Com · The star 17Com

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Melotte 111

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Melotte 111

The Coma Star Cluster in Coma Berenices is a large, nearby, and conspicuous open star cluster. It was first catalogued by Ptolemy in 138 AD. Although conspicuous, the cluster was not included in the Messier or NGC catalogs. Its true nature as an open cluster was proven only in 1938.

The Coma Star Cluster is scattered over an area of 4.5 degrees and contains 40 stars from magnitude 4.3 to 10.5. They were identified as members by their common proper motion. The cluster’s distance was refined by the Hipparcos satellite, and is now estimated at 288 light-years. It’s age is estimated to be 400 million years.

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The OSC Club (One Shot Camera)
The refractors!
Northeast Imagers
Cloudy Nights
Suburban Astrophotography
Musical Imagers

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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.

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Astrometry.net job	2071154
PixInsight job	n/a
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Melotte 111

Melotte 111

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Melotte 111

Melotte 111

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