Abell 1656 - The Coma Cluster (SoundIdea)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: NGC 4839 · NGC 4874 · NGC 4889 · NGC 4921

Abell 1656 - The Coma Cluster, SoundIdea

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Abell 1656 - The Coma Cluster

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Abell 1656 - The Coma Cluster

This field of view contains one of the largest gravitationally-bound structures in the visible universe, a cluster of over 1000 identified galaxies. Most of them are so distant that it is difficult to tell them apart from the stars in our own Milky Way in the foreground.

The Coma Cluster is one of the first places where astronomers were able to determine that there must be more mass than what is visible to us, a phenomenon called Dark Matter, and is still not understood even to this day.

Each one of those tiny fuzzy blobs contains hundreds of billions of stars. An image like this is very humbling. The universe is a very very big place indeed.

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Description: This is using PixInsight's annotation script to highlight only the known galaxies in the NGC and PGC catalogs.

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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	Basic success
Started	...
Astrometry.net job	3444548
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Abell 1656 - The Coma Cluster

Abell 1656 - The Coma Cluster

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Image Index:

Contribution Index (beta):

Abell 1656 - The Coma Cluster

Abell 1656 - The Coma Cluster

Equipment

Acquisition details

Description

Comments

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Sky plot

Histogram

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