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      M20 Widefield HSO & LRGB
      Wallpaper author:
      Tryggve Dyrvik

      25 Jun 2025

      M20 Widefield HSO & LRGB

      This wallpaper is a combination of two datasets from TL3, both titled M20 widefield—one in LRGB and the other in HSO. The stars are taken from an LRGB starless version and combined with an averaged starless image using both LRGB and HSO data. The processing was done in AstroPixelProcessor and PixInsight, with the final blend using an avg(x,y) PixelMath formula, inspired by the workflow shown in Masters of PixInsight: Photons to Photos #29.

      My processing of the M20 widefield image was inspired by a recently released photo from the Vera Rubin Observatory in Chile.

      Dataset from which the image was processed

      M20

      5 credit

      Open
      Telescope Live
      AUS-2-CMOS
      • Type of target
        ............................................................................................................................
        Emission Nebula
      • Camera
        ............................................................................................................................
        QHY 600M
      • Target coordinates
        ............................................................................................................................
        RA 271.0287 Dec -23.6508
      • Hemisphere
        ............................................................................................................................
        Southern
      • Telescope location
        ............................................................................................................................
        Australia
      • Transient event
        ............................................................................................................................
        No
      • Observed on
        ............................................................................................................................
        22 May 2023 - 29 May 2023
      Filter
      Avg Exp (s)
      Total Exposure
      Subframes
      Halpha3751h40m16
      Blue2811h15m16
      Red2811h15m16
      Luminance2811h15m16
      Green2811h15m16

      M20 Widefield HSO & LRGB