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Contains:  IC 1178, IC 1181, IC 1182, IC 1185, IC1170, IC1172, IC1176, IC1178, IC1179, IC1181, IC1182, IC1183, IC1184, IC1185, NGC 6039, NGC 6040, NGC 6041, NGC 6043, NGC 6044, NGC 6045, NGC 6047, NGC 6050, NGC 6054, NGC 6056, NGC6040, NGC6041, NGC6042, NGC6043, NGC6044, NGC6045, NGC6047, NGC6050, NGC6054, NGC6056

Image of the day 06/13/2020

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    The Hercules Cluster of Galaxies (Abell 2151), 



    
        

            KuriousGeorge
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    The Hercules Cluster of Galaxies (Abell 2151)

    Technical card


    Dates:May 23, 2020May 25, 2020May 26, 2020

    Frames:
    Astrodon 50 mm G: 12x900" -30C bin 1x1
    Astrodon 50mm B: 12x900" -30C bin 1x1
    Astrodon 50mm L: 21x900" -30C bin 1x1
    Astrodon 50mm R: 12x900" -30C bin 1x1

    Integration: 14.2 hours

    Darks: ~20

    Flats: ~80

    Flat darks: ~80

    Bias: ~20

    Avg. Moon age: 2.33 days

    Avg. Moon phase: 7.50%

    Mean SQM: 21.50

    Mean FWHM: 2.00


    Astrometry.net job: 3569533

    RA center: 16h 5' 9"

    DEC center: +17° 45' 31"

    Pixel scale: 0.234 arcsec/pixel

    Orientation: -177.995 degrees

    Field radius: 0.330 degrees


    Resolution: 6828x7536

    Locations: KG Observatory, Julian, CA, United States

    Data source: Backyard

    Description

    I first attempted this galaxy cluster 2 years ago when still dialing in the 24"...

    1st attempt in 2018

    ... so I thought I'd try again with things starting to settle down.

    Skies were very dark (21.5 SQM) and steady (under 2" FWHM), so color capture was much better than in 2018.

    2x drizzle was used to help extract detail in the very smallest galaxies.

    "The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies some 500 million light-years distant in the constellation Hercules. It is rich in spiral galaxies and shows many interacting galaxies. The cluster is part of the larger Hercules Supercluster, which is itself part of the much larger Great Wall super-structure."

    Comments

    Author

    KuriousGeorge
    KuriousGeorge
    License: None (All rights reserved)
    149834
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    The Hercules Cluster of Galaxies (Abell 2151), 



    
        

            KuriousGeorge