Abell 1656 Coma Cluster (Reg Pratt)

Celestial hemisphere: Northern · Constellation: Coma Berenices (Com) · Contains: IC 3943 · IC 3946 · IC 3947 · IC 3949 · IC 3955 · IC 3957 · IC 3959 · IC 3960 · IC 3963 · IC 3968 · IC 3973 · IC 3976 · IC 3998 · IC 4011 · IC 4012 · IC 4021 · IC 4026 · IC 4030 · IC 4033 · IC 4040 · IC 4041 · IC 4042 · IC 4044 · IC 4045 · IC 4051 · IC 839 · NGC 4848 · NGC 4850 · NGC 4851 · NGC 4854 · And 27 more.

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Abell 1656 Coma Cluster

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Abell 1656 Coma Cluster

There are more galaxies in this image than there are stars. In this field you'll find...

NGC 4889, 4874, 4896, 4881, 4895, 4907 4865, 4050, 4864, 4867, 4883, 4886, 4894, 4907, 4906, 4876, 4871, 4872, 4869, 4854, 4853, 4850

As well as..

IC 4045, 4040, 4041, 4908, 4051, 4042, 4033, 4030, 4021, 4012, 4026, 3955, 3968, 3973, 3976, 3960, 3949, 3946, 3959, 3957, 3963

And many more!

If I had access to big glass the first thing I would do is take a high resolution mosaic of this area because almost every pixel of light you see in the field is a galaxy. Those of you who know me well know I'm not much for galaxies but this is one of the few exceptions.

Equipment:
Teleskop Service 203mm Ritchey Chretien
TS CCD47T Reducer (0.75x)
ZWO ASI2600MM
TS-Optics LRGB
PrimaluceLab Estate Focuser 2"
Pegasus Falcon Rotator
iOptron GEM45 Mount

SQM: Mag 21.3 [Bortle 4]

L: 21.13
R: 4.78
G: 4.77
B: 4.76
Total Integration: 35.44 hrs

SF Bay Area Imagers
ZWO ASI2600MM Pro

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	5661036
PixInsight job	H0S7PIRSNF9NJCAU8SIQ4PT5BXR686FZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h00m13s.66
RA (top/left)	12h57m53s.29
RA (top/right)	13h02m33s.45
RA (bottom/right)	13h02m34s.88
RA (bottom/left)	12h57m52s.54

Dec (center)	+27°59′30″.2
Dec (top/left)	+27°38′33″.4
Dec (top/right)	+27°38′24″.7
Dec (bottom/right)	+28°20′18″.4
Dec (bottom/left)	+28°20′28″.1

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Contribution Index (beta):

Abell 1656 Coma Cluster

Abell 1656 Coma Cluster

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Image Index:

Contribution Index (beta):

Abell 1656 Coma Cluster

Abell 1656 Coma Cluster

Equipment

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Description

Comments

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