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 4106  ·  IC 839  ·  NGC 4828  ·  NGC 4840  ·  NGC 4848  ·  And 35 more.
Getting plate-solving status, please wait...
Abell 1656 The Coma Cluster - Newton 250mm f/4 - Bortle 7 backyard, 



    
        

            Mathieu Guinot
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Abell 1656 The Coma Cluster - Newton 250mm f/4 - Bortle 7 backyard

Getting plate-solving status, please wait...
Abell 1656 The Coma Cluster - Newton 250mm f/4 - Bortle 7 backyard, 



    
        

            Mathieu Guinot
Powered byPixInsight

Abell 1656 The Coma Cluster - Newton 250mm f/4 - Bortle 7 backyard

Acquisition details

Dates:
Feb. 26, 2022 ·  Feb. 27, 2022 ·  Feb. 28, 2022 ·  March 6, 2022 ·  March 7, 2022 ·  March 8, 2022 ·  March 9, 2022
Frames:
Antlia Blue: 18×300(1h 30′) bin 1×1
Antlia Green: 18×300(1h 30′) bin 1×1
Antlia Luminance: 232×300(19h 20′) (gain: 100.00) -10°C bin 1×1
Antlia Red: 18×300(1h 30′) bin 1×1
Integration:
23h 50′
Darks:
64
Flats:
21
Bias:
101
Avg. Moon age:
14.11 days
Avg. Moon phase:
21.91%
Bortle Dark-Sky Scale:
7.00
Mean FWHM:
2.50

RA center: 12h59m48s.665

DEC center: +27°5851.40

Pixel scale: 0.812 arcsec/pixel

Orientation: 0.170 degrees

Field radius: 0.829 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 6128x4072

File size: 12.4 MB

Data source: Backyard

Description

The fantastic Coma Cluster (Abell 1656) located 330 millions light-years away in Coma Berenice contains over 1000 identified galaxies.  Along with the Leo Cluster (Abell 1367), it is one of the two major clusters comprising the Coma Supercluster.
The central region is dominated by two supergiant elliptical galaxies : NGC4874 and NGC4889, and as is usual for clusters of this richness, the galaxies are overwhelmingly elliptical, with only a few spirals of younger age  near the outskirts of the cluster.

I wanted to capture this object for a long time and I'm glad I could do it from my downtown Bortle 6-7 sky :-)

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Abell 1656 The Coma Cluster - Newton 250mm f/4 - Bortle 7 backyard, 



    
        

            Mathieu Guinot