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      The Horsehead Nebula and NGC 2023
      Wallpaper author:
      Jonathan Lodge

      27 Nov 2022

      The Horsehead Nebula and NGC 2023

      The Horsehead Nebula (aka Barnard 33) is a small dark nebula in the constellation Orion. The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, and is part of the much larger Orion molecular cloud complex. It appears within the southern region of the dense dust cloud known as Lynds 1630, along the edge of the much larger, active star-forming H II region called IC 434. It is approximately 1,375 light-years from Earth.

      NGC 2023 (lower left) is an emission and reflection nebula in the equatorial constellation of Orion. This reflection nebula is one of the largest in the sky, with a size of 10 × 10 arcminutes. It is located at a distance of 1,300 light years from Earth.

      The glare from Alnitak was pretty overpowering and took some work to tame. Also I used the new SPCC process in PixInsight for the first time, the difference between PCC is subtle but definitely helped bring some of the colours out, particularly in NGC 2023.

      Dataset from which the image was processed

      B33

      7 credit

      Open
      Telescope Live
      CHI-1-CCD
      • Type of target
        ............................................................................................................................
        Emission Nebula
      • Camera
        ............................................................................................................................
        FLI ProLine PL9000
      • Target coordinates
        ............................................................................................................................
        RA 85.37133 Dec -2.32686
      • Hemisphere
        ............................................................................................................................
        Southern
      • Telescope location
        ............................................................................................................................
        Chile
      • Transient event
        ............................................................................................................................
        No
      • Observed on
        ............................................................................................................................
        04 Dec 2021 - 20 Apr 2022
      Filter
      Avg Exp (s)
      Total Exposure
      Subframes
      Luminance7603h10m15
      Red5572h10m14
      Green5572h10m14
      Blue5142h14

      The Horsehead Nebula and NGC 2023