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SH2-188, 



    
        

            Tim

SH2-188

Technical card


Dates:Sept. 16, 2019Oct. 4, 2019Oct. 9, 2019Oct. 10, 2019

Frames:
Baader OIII 8.5nm 1.25": 126x300" (gain: 139.00) -20C bin 1x1
Baader Ha 1.25" 7nm: 136x300" (gain: 139.00) -20C bin 1x1
Baader SII 1,25" 8nm: 93x300" (gain: 139.00) -20C bin 1x1

Integration: 29.6 hours

Darks: ~20

Flats: ~20

Flat darks: ~20

Avg. Moon age: 11.41 days

Avg. Moon phase: 76.58%


Basic astrometry details

Astrometry.net job: 3277715


Resolution: 2032x1409

Locations: Home Observatory - Nelsons Bay Observatory , South River, Ontario, Canada

Data source: Backyard

Description

Occasionally I like to image something that is at the edge of my equipment and ability. SH2-188 is one of those images. The expanding gas from SH2-188 has a nearly circular shape, but is much brighter to one side. This is because the rapidly moving central star is s creating a bow shock in that direction. This bright side or crescent is fairly easy to image. Bringing out the faint wisps of gas to complete the circle, including those trailing behind, was much more difficult.

Comments

Author

TimN
Tim
License: Attribution-NonCommercial Creative Commons
1811
Like

Revisions

  • SH2-188, 



    
        

            Tim
    Original
  • Final
    SH2-188, 



    
        

            Tim
    B

Histogram

SH2-188, 



    
        

            Tim