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      Featured wallpaper
      Wallpaper author:
      Mark Johnston

      04 Feb 2026

      AR4633 active region in high resolution broadband

      AR4633 is the very active region on the Sun that has been spitting out M and X-class flares the first week of Feb 2026. This high resolution image shows a light bridge across the umbra of the larger sunspot, penumbral details, pores and granules.

      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
        ............................................................................................................................
        01 Feb 2026 - 01 Feb 2026
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      Avg Exp (s)
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      Subframes
      Luminance1803m1

      AR4633 active region in high resolution broadband