Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  NGC 4839  ·  NGC 4874  ·  NGC 4889  ·  NGC 4921
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Abell 1656 - The Coma Cluster, 



    
        

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Abell 1656 - The Coma Cluster
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Abell 1656 - The Coma Cluster

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Abell 1656 - The Coma Cluster, 



    
        

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Abell 1656 - The Coma Cluster
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Abell 1656 - The Coma Cluster

Technical card

Imaging telescopes or lenses: TMB 80 SS

Imaging cameras: ZWO ASI1600mm-Pro

Mounts: Software Bisque Paramount MYT

Guiding cameras: ZWO ASI120mm-Mini

Software: Nighttime Imaging 'N' Astronomy  ·  Pixinsight

Filters: Baader Planetarium LRGB 31mm


Dates:April 19, 2020

Frames:Baader Planetarium LRGB 31mm: 280x180" (14h) bin 1x1

Integration: 14h

Avg. Moon age: 26.30 days

Avg. Moon phase: 11.36%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.50


Basic astrometry details

Astrometry.net job: 3444548

RA center: 13h 0' 7"

DEC center: +27° 58' 48"

Pixel scale: 1.552 arcsec/pixel

Orientation: 0.671 degrees

Field radius: 1.221 degrees


Resolution: 4556x3368

Locations: Umtanum Creek Trailhead, Selah, Washington, United States

Data source: Traveller

Description

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.

Uploaded: ...

Sky plot

Sky plot

Histogram

Abell 1656 - The Coma Cluster, 



    
        

            SoundIdea