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      Featured wallpaper
      Wallpaper author:
      Mark Johnston

      31 Jul 2025

      Active prominence transition (5 images)

      Dataset shows a highly unusual prom on the Sun's limb. In the displayed image, it loops back on itself. In subsequent images, the loop breaks apart and creates new patterns. All images are high quality raw TIFFs with accompanying finished JPGs. It's a very interesting progression. Seeing 5/5.

      Dataset author
      Mark Johnston
      T-18

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      • Type of target
        ............................................................................................................................
        Sun
      • Camera
        ............................................................................................................................
        Player One Apollo-M IMX174M with cooler
      • Target coordinates
        ............................................................................................................................
        RA 00 00 00.0 Dec 00 00 00
      • Hemisphere
        ............................................................................................................................
        Northern
      • Telescope location
        ............................................................................................................................
        United States of America
      • Transient event
        ............................................................................................................................
        Yes
      • Observed on
        ............................................................................................................................
        29 Jul 2025 - 30 Jul 2025
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      Subframes
      Halpha1089m5

      Active prominence transition (5 images)