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      Featured wallpaper
      Wallpaper author:
      Mark Johnston

      26 Jun 2025

      Spectacular prominence in both single and double stack to show the difference

      Dataset shows a spectacular prominence on the Sun from April 9 2025. I imaged it in both single and double stack configurations, and both are included in the dataset. You will note much more limb detail and contrast in the double stack version. Dataset includes 2 raw tiffs and 2 finished JPGs. Seeing 4/5

      Dataset author
      Mark Johnston
      T-18

      Other wallpapers

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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
        ............................................................................................................................
        08 Apr 2025 - 09 Apr 2025
      Filter
      Avg Exp (s)
      Total Exposure
      Subframes
      Halpha90030m2

      Spectacular prominence in both single and double stack to show the difference