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 3973  ·  IC 3976  ·  IC 3998  ·  IC 4012  ·  IC 4026  ·  IC 4030  ·  IC 4033  ·  IC 4040  ·  IC 4041  ·  IC 4042  ·  IC 4045  ·  IC 4051  ·  NGC 4858  ·  NGC 4860  ·  NGC 4864  ·  NGC 4865  ·  NGC 4867  ·  NGC 4869  ·  NGC 4871  ·  NGC 4872  ·  NGC 4873  ·  And 10 more.

Image of the day 06/03/2024

Getting plate-solving status, please wait...
    [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
    [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656.
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    [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656.

    Revision title: A few color correction again.

    Image of the day 06/03/2024

    Getting plate-solving status, please wait...
      [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
      [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656.
      Powered byPixInsight

      [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656.

      Revision title: A few color correction again.

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      Description

      Hello friends,

      The Omicron team is very proud to present to you a very deep image of the Coma cluster.

      The Coma Cluster (Abell 1656) is a large cluster of galaxies that contains over 1,000 identified galaxies. The central region is dominated by two supergiant elliptical galaxies: NGC 4874 and NGC 4889. The cluster is within a few degrees of the north galactic pole on the sky. Most of the galaxies that inhabit the central portion of the Coma Cluster are ellipticals. Both dwarf and giant ellipticals are found in abundance in the Coma Cluster.

      Serge Brunier started it in March and the bad weather didn't help us finish it. We just managed to finish the color last night. We didn't manage to get more than 7 hours of luminance even though we wanted 12. But it doesn't matter, it's too low now and the image still reaches magnitude 25.1! The seeing was average to good with 5h30 at 1,9" kept for the background and the extensions and 1h30 at 1,35" for the high lights.

      The full image shows thousands of galaxies in the field, some of which are far beyond the cluster. Dozens of globular clusters are also visible around giant galaxies. Yes, globulars at 320 million light years !!

      Please, don't miss the 4K full resolution image here : 

      Here is what the center looks like :





      In 2014, a group of researchers from the Stony Brook University (the State University of New York) and the National Astronomical Observatory of Japan has discovered 854 "ultra dark galaxies" in the Coma Cluster by analyzing archival data from the Subaru Telescope. The discovery of 47 such mysterious dark galaxies was a surprising find in 2014, and the new discovery of more than 800 suggests galaxy clusters as the key environment for the evolution of these mysterious dark galaxies (source subaru telescope.org). Those galaxies are very likely enveloped by something very massive, like black matter.

      We have detected most of these galaxies as shown in the comparison below :




      We hope you will get lost in this one.

      Clear skies.

      JF

      Comments

      Revisions

        [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
        Original
        [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
        B
        [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
        D
        [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
        E
      • Final
        [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor
        F

      B

      Title: Dark galaxies from Subaru

      Uploaded: ...

      D

      Title: Color blotches corected.

      Uploaded: ...

      E

      Title: Crop

      Uploaded: ...

      F

      Title: A few color correction again.

      Uploaded: ...

      Sky plot

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      [TEAM OMICRON] A deep dive into the Coma cluster - Abell 1656., Jeffbax Velocicaptor