Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble nebula  ·  NGC 7635

Image of the day 10/18/2018

    Bubble Nebula (bicolor), 



    
        

            John Renaud
    Bubble Nebula (bicolor)
    Powered byPixInsight

    Bubble Nebula (bicolor)

    Image of the day 10/18/2018

      Bubble Nebula (bicolor), 



    
        

            John Renaud
      Bubble Nebula (bicolor)
      Powered byPixInsight

      Bubble Nebula (bicolor)

      Technical card

      Imaging telescopes or lenses: Sky-Watcher Esprit 150ED

      Imaging cameras: Atik One

      Mounts: Astro-Physics 1100GTO

      Guiding cameras: SX Ultrastar

      Software: Sequence Generator Pro  ·  PixInsight  ·  Photoshop  ·  PHD2

      Filters: Astrodon 5nm Ha  ·  Astrodon 3nm OIII

      Accessory: Atik OAG


      Dates:Aug. 16, 2018Sept. 18, 2018Sept. 19, 2018Oct. 1, 2018Oct. 2, 2018Oct. 3, 2018

      Frames:
      Astrodon 3nm OIII: 51x900" -5C bin 1x1
      Astrodon 5nm Ha: 39x900" -5C bin 1x1

      Integration: 22.5 hours

      Avg. Moon age: 15.12 days

      Avg. Moon phase: 52.67%


      Basic astrometry details

      Astrometry.net job: 2303485

      RA center: 23h 20' 40"

      DEC center: +61° 10' 55"

      Pixel scale: 0.435 arcsec/pixel

      Orientation: 177.903 degrees

      Field radius: 0.236 degrees


      Resolution: 3000x2500

      Data source: Backyard

      Description

      I thought I was going to run out of time on this one and nearly abandoned it for the year but three [mostly] clear nights in early October brought it back to life. Very challenging to process overall but, in particular, star control was a big challenge... I went back to the drawing board a couple of times to better address the stars but finally decided to move on.

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      Bubble Nebula (bicolor), 



    
        

            John Renaud