Abell Galaxy Cluster Catalogue - Highlights (Gary Imm)

Abell Galaxy Cluster Catalogue - Highlights

Abell galaxy clusters encompass massive space and distance and are the largest known gravitationally bound structures in the universe. The Abell catalog consists of 4073 objects - the original 2712 clusters of the original George O. Abell "Northern Survey" of 1958, supplemented with an additional 1361 clusters from the "Southern Survey" in 1989. These images help us to appreciate the vastness of the huge universe which lies beyond the boundaries of our small planet.

The poster highlights 25 of the best Abell clusters. North is oriented to the top of the poster for each image.

The technical data for the galaxy clusters of the poster is shown in Revision B. The data includes the location data, the number of galaxies in the cluster, the apparent size of the cluster to our view, and the distance away from us. Note that these clusters range in distance away from us from 70 million to 2.3 billion light years.

If you would like to read more about any of these objects, each of the objects in the poster has previously been uploaded and described individually on Astrobin. They all reside in my Astrobin Abell Galaxy Cluster Collection.

Final
Original
B

B

Description: Technical Data

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Cloudy Nights
Themed Compilation Posters

Abell Galaxy Cluster Catalog (27)
Catalogue Posters
Galaxy Catalogs
Galaxy Clusters
Multiple Galaxies

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.

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