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      The Christmas Tree Cluster and Cone Nebula
      Wallpaper author:
      Steve Teel

      28 Dec 2024

      The Christmas Tree Cluster and Cone Nebula

      They're in there somewhere. I'm tending to apply more than traditional stretching to my photos because I realize that, by nature, I'm an explorer not a photographer and contemporary sensors are capable of more HDR than traditionally used. I have been skeptical because of the sometimes-grainy appearance of regions like those at the perimeter of this photo, but after comparing many similar photos I've come to realize that the representation is accurate even if exaggerated due to local stretching. More than anything, what this approach needs technically is a multiscale gradient correction that can be applied to monochrome S, H, and O images separately.

      Dataset from which the image was processed

      NGC 2264

      8 credit

      Open
      Telescope Live
      SPA-3-CCD
      • Type of target
        ............................................................................................................................
        Emission Nebula
      • Camera
        ............................................................................................................................
        FLI PL16083
      • Target coordinates
        ............................................................................................................................
        RA 100.2417 Dec 9.88333
      • Hemisphere
        ............................................................................................................................
        Northern
      • Telescope location
        ............................................................................................................................
        Spain
      • Transient event
        ............................................................................................................................
        No
      • Observed on
        ............................................................................................................................
        10 Nov 2020 - 29 Dec 2022
      Filter
      Avg Exp (s)
      Total Exposure
      Subframes
      Halpha3003h40m44
      OIII3003h40m44
      SII3003h40m44

      The Christmas Tree Cluster and Cone Nebula