Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
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

Getting plate-solving status, please wait...
    The Hercules Cluster of Galaxies (Abell 2151), 


    Powered byPixInsight

    The Hercules Cluster of Galaxies (Abell 2151)

    Imaging telescopes or lenses: Planewave CDK24

    Imaging cameras: FLI Proline 16803

    Mounts: Planewave L600

    Guiding cameras: Starlight Xpress Ultrastar

    Focal reducers: None

    Software: Photoshop CS3  ·  PixInsight 1.8  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Planewave PWI4  ·  Planewave PWI3  ·  Maxim DL6  ·  Sequence Generator Pro

    Filters: Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L  ·  Astrodon 50 mm G

    Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA

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

    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 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


    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."



    License: None (All rights reserved)

    Sky plot

    Sky plot


    The Hercules Cluster of Galaxies (Abell 2151),