Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)

Image of the day 10/11/2017

Getting plate-solving status, please wait...
    SH2-129 & Ou4 Flying Bat & Squid Nebula, 



    
        

            Douglas J Struble
    SH2-129 & Ou4 Flying Bat & Squid Nebula
    Powered byPixInsight

    SH2-129 & Ou4 Flying Bat & Squid Nebula

    Image of the day 10/11/2017

    Getting plate-solving status, please wait...
      SH2-129 & Ou4 Flying Bat & Squid Nebula, 



    
        

            Douglas J Struble
      SH2-129 & Ou4 Flying Bat & Squid Nebula
      Powered byPixInsight

      SH2-129 & Ou4 Flying Bat & Squid Nebula

      Acquisition details

      Dates:
      Sept. 28, 2017 ·  Oct. 2, 2017
      Frames:
      Astrodon Ha 5nm: 60×240(4h) (gain: 139.00) -20°C bin 1×1
      Astrodon OIII 3nm: 509×240(33h 56′) (gain: 139.00) -20°C bin 1×1
      Integration:
      37h 56′
      Darks:
      50
      Flats:
      50
      Bias:
      250
      Avg. Moon age:
      9.57 days
      Avg. Moon phase:
      70.72%
      Bortle Dark-Sky Scale:
      6.00

      Basic astrometry details

      Astrometry.net job: 3268052

      RA center: 21h09m27s.6

      DEC center: +60°0932

      Pixel scale: 2.316 arcsec/pixel

      Orientation: 67.750 degrees

      Field radius: 1.729 degrees

      Resolution: 3357x4199

      File size: 14.5 MB

      Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

      Data source: Backyard

      Description

      Sharpless 129 is an H-alpha emission nebula commonly called the Flying Bat Nebula located in Cepheus very close to the famous IC 1396 (the nebula that contains the Elephant's Trunk). The large blue/green nebula inside it, which is over a degree long, is formally known as Ou4 but is colloquially called the Squid (or Giant Squid) Nebula. Ou4 is remarkable for having been discovered very recently, in 2011, by amateur astronomer Nicolas Outters (hence the "Ou" in "Ou4"). It was originally called a planetary nebula but is now thought to be some kind of bipolar outflow from the bright blue star at its center (which is HR 8119).

      Comments

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      • Final
        SH2-129 & Ou4 Flying Bat & Squid Nebula, 



    
        

            Douglas J Struble
        Original
        SH2-129 & Ou4 Flying Bat & Squid Nebula, 



    
        

            Douglas J Struble
        B

      B

      Description: Astronomy Magazine Picture of the Day 6-25-2019

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      SH2-129 & Ou4 Flying Bat & Squid Nebula, 



    
        

            Douglas J Struble