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Image of the day 01/26/2023

Getting plate-solving status, please wait...
    CTB-1 / Abell 85, 



    
        

            AaronW
    Powered byPixInsight

    CTB-1 / Abell 85

    Image of the day 01/26/2023

    Getting plate-solving status, please wait...
      CTB-1 / Abell 85, 



    
        

            AaronW
      Powered byPixInsight

      CTB-1 / Abell 85

      Acquisition details

      Dates:
      Oct. 18, 2022 ·  Oct. 19, 2022 ·  Oct. 20, 2022 ·  Oct. 23, 2022 ·  Oct. 24, 2022 ·  Oct. 25, 2022 ·  Oct. 26, 2022 ·  Oct. 27, 2022 ·  Oct. 28, 2022 ·  Oct. 29, 2022 ·  Oct. 30, 2022 ·  Nov. 2, 2022 ·  Nov. 3, 2022 ·  Nov. 5, 2022
      Frames:
      Chroma H-alpha 3nm Bandpass 50 mm: 88×900(22h) f/5.5 -15°C bin 1×1
      Chroma OIII 3nm Bandpass 50 mm: 93×900(23h 15′) f/5.5 -15°C bin 1×1
      Chroma SII 3nm Bandpass 50 mm: 107×900(26h 45′) f/5.5 -15°C bin 1×1
      Integration:
      72h
      Darks:
      50
      Flats:
      50
      Bias:
      200
      Avg. Moon age:
      12.43 days
      Avg. Moon phase:
      28.79%
      Bortle Dark-Sky Scale:
      7.00

      RA center: 23h59m17s.44

      DEC center: +62°5602.3

      Pixel scale: 1.054 arcsec/pixel

      Orientation: 174.638 degrees

      Field radius: 1.676 degrees

      WCS transformation: thin plate spline

      More info:Open 

      Resolution: 6371x9556

      File size: 28.6 MB

      Data source: Backyard

      Description

      CTB-1 / Abell 85 -- aka the Medulla nebula, the Popped Balloon nebula, the Garlic nebula, etc.

      This supernova remnant is extremely faint -- even with 72 hours of data captured over 14 nights.  H-alpha and S2 dominate, but O3 is there, and bringing out its wispy tendrils from a sea of deep red without blowing out the rest of the image required some careful processing.  The starfield is extremely dense, and maintaining the delicate filaments proved quite challenging.  When it comes to processing this target, I learned after many iterations that less is more.

      I love how delicate this object looks, especially considering it is the result of an exploding star 10,000 light years away.

      Processed in the Hubble palette entirely in PixInsight.

      Hope you enjoy!

      Comments

      Sky plot

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      Histogram

      CTB-1 / Abell 85, 



    
        

            AaronW