Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)

Image of the day 05/18/2022

Getting plate-solving status, please wait...
    Sh2-188, 



    
        

            Rudi Van Minnebruggen
    Sh2-188
    Powered byPixInsight

    Sh2-188

    Image of the day 05/18/2022

    Getting plate-solving status, please wait...
      Sh2-188, 



    
        

            Rudi Van Minnebruggen
      Sh2-188
      Powered byPixInsight

      Sh2-188

      Equipment

      Imaging Telescopes Or Lenses
      SW Esprit 150ED
      Imaging Cameras
      ZWO ASI2600MM Pro
      Mounts
      Mesu 200 Mk2
      Filters
      Chroma G 36mm · Chroma R 36mm · Chroma B 36mm · Chroma OIII 3nm 36 mm · chroma Ha 5 nm 36 mm
      Accessories
      Pegasus Astro Pocket Powerbox · ZWO OAG M48
      Software
      SGPRO, PHD2. PixInsight, Photoshop, ASCOM s
      Guiding Cameras
      ZWO ASI290MM Mini

      Acquisition details

      Dates:
      Sept. 22, 2021 ·  Sept. 23, 2021 ·  Sept. 24, 2021 ·  Oct. 8, 2021 ·  Oct. 9, 2021
      Frames:
      Chroma B 36mm: 73x60" (1h 13') -10°C
      Chroma G 36mm: 72x60" (1h 12') -10°C
      Chroma OIII 3nm 36 mm: 200x600" (33h 20') -10°C
      Chroma R 36mm: 75x60" (1h 15') -10°C
      chroma Ha 5 nm 36 mm: 282x600" (47h) -10°C
      Integration:
      84h
      Darks:
      30
      Flats:
      30
      Flat darks:
      30
      Avg. Moon age:
      11.42 days
      Avg. Moon phase:
      59.58%
      Mean SQM:
      18.80

      Basic astrometry details

      Astrometry.net job: 5748895

      RA center: 01h30m33s.4

      DEC center: +58°2450

      Pixel scale: 1.386 arcsec/pixel

      Orientation: 1.338 degrees

      Field radius: 0.741 degrees

      Resolution: 3200x2139

      Locations: Home observatory, Temse, Belgium

      Data source: Backyard

      Description

      The same data as my previous rendition. There were some things I wasn't really satisfied with so I had to redo it !!
      With thanks to Marcel Drechsler for his valuable tips.

      C&C most welcome.

       I usually do a bit off research on my targets, so hereby a very short introduction:Sharpless 188 (Sh2-188, Simeis 22) sometimes called the  Dolphin Nebula. First photographed in 1965, and initially thought to be a supernova remnant. However, this is an unusual planetary nebula, in the Northern constellation off Cassiopeia, 700 - 850 light-years from earth.It has a nearly circular shape,and is much brighter in the SouthEast (lower left jn My image, North is up). The rapidly moving central star is creating a bow shock in that direction, interacting with the surrounding interstellar medium.This PN got my interest many years ago when I saw Steve Cannistra’s image from 2006 (link below). And I was kinda curious to see what I could ‘catch’ with my modest setup in polluted skies.http://www.starrywonders.com/sh2188.htmlFor further reading:http://www.starrywonders.com/sh2188.htmlhttp://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/sh2-188/

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