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      T-22

      TEC160FL apochromat with Baader ERF, Baader TZ4 telecentric, Solar Spectrum 0.3A hydrogen alpha filter double stacked with Lunt 40mm 0.7A Ha filter. Field of view on the Sun 8.7 x 5.5 arc minutes.

      Telescope Owner
      Mark Johnston
      • Model
        ............................................................................................................................
        TEC160FL
      • F-Ratio
        ............................................................................................................................
        F28
      • Aperture
        ............................................................................................................................
        16 cm
      • Location
        ............................................................................................................................
        United States of America
      • Camera
        ............................................................................................................................
        Player One Apollo-M IMX174M with cooler
      • Bortle scale
        ............................................................................................................................
        5
      • Focal Length
        ............................................................................................................................
        448 cm

      Datasets made by telescope

      View all
      Mark Johnston
      8 credits

      Bigfoot on the Sun

      H
      30m
      • Telescope
        ............................................................................................................................
        T-22
      • Field of View
        ............................................................................................................................
        8.71 x 5.47 arcmin
      • Location
        ............................................................................................................................
        United States of America
      • Transient Event
        ............................................................................................................................
        Yes
      Mark Johnston
      20 credits

      Solar Plasma cloud Oct 20 2025

      H
      8m
      • Telescope
        ............................................................................................................................
        T-22
      • Field of View
        ............................................................................................................................
        8.71 x 5.47 arcmin
      • Location
        ............................................................................................................................
        United States of America
      • Transient Event
        ............................................................................................................................
        No
      Mark Johnston
      5 credits

      Solar prominence Jan 20 2026

      H
      6m
      • Telescope
        ............................................................................................................................
        T-22
      • Field of View
        ............................................................................................................................
        8.71 x 5.47 arcmin
      • Location
        ............................................................................................................................
        United States of America
      • Transient Event
        ............................................................................................................................
        Yes
      Mark Johnston
      7 credits

      Surge prominence with spray April 9 2026

      H
      4m
      • Telescope
        ............................................................................................................................
        T-22
      • Field of View
        ............................................................................................................................
        8.71 x 5.47 arcmin
      • Location
        ............................................................................................................................
        United States of America
      • Transient Event
        ............................................................................................................................
        Yes

      T-22