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      NGC 5139; aka Omega Centauri
      Wallpaper author:
      Judith Prana

      09 Mar 2026

      NGC 5139; aka Omega Centauri

      Omega Centauri is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677. Located at a distance of 17,090 light-years, it is the largest known globular cluster in the Milky Way at a diameter of roughly 150 light-years. It is estimated to contain approximately 10 million stars, with a total mass of 4 million solar masses, making it the most massive known globular cluster in the Milky Way. Omega Centauri is very different from most other galactic globular clusters to the extent that it is thought to have originated as the core remnant of a disrupted dwarf galaxy. There is evidence of an intermediate-mass black hole in the dense core of this cluster, although this is disputed. Full details on Astrobin:


      https://app.astrobin.com/u/devprana?i=pujeyz#gallery

      Dataset from which the image was processed

      NGC 5139

      9 credit

      Open
      Telescope Live
      CHI-1-CCD
      • Type of target
        ............................................................................................................................
        Globular Cluster
      • Camera
        ............................................................................................................................
        FLI ProLine PL9000
      • Target coordinates
        ............................................................................................................................
        RA 201.697 Dec -47.4795
      • Hemisphere
        ............................................................................................................................
        Southern
      • Telescope location
        ............................................................................................................................
        Chile
      • Transient event
        ............................................................................................................................
        No
      • Observed on
        ............................................................................................................................
        10 Feb 2020 - 29 Jul 2021
      Filter
      Avg Exp (s)
      Total Exposure
      Subframes
      Luminance3002h50m34
      Red3092h50m33
      Green2822h35m33
      Blue3092h50m33

      NGC 5139; aka Omega Centauri