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Crescent Nebula NGC6888, 





    
        

            Prabhakar

Crescent Nebula NGC6888

Technical card

Imaging telescope or lens:Takahashi FSQ85

Imaging camera:QSI683wsg

Mount:Orion Atlas EQ-G + EQDIR

Guiding telescope or lens:Takahashi FSQ85

Guiding camera:Lodestar

Software:Startools 1.3.5

Filter:Astrodon 5nm Halpha

Resolution: 1610x1199

Dates:Sept. 20, 2015

Frames: 12x600"

Integration: 2.0 hours

Avg. Moon age: 6.55 days

Avg. Moon phase: 41.15%

Astrometry.net job: 877154

Description

Crescent Nebula (NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away. It was discovered by Friedrich Wilhelm Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward.
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Imaged from Everglades, South Florida

Ha - 12x10mins

Comments

Author

neomonks
Prabhakar
License: Attribution Creative Commons
1522
Like

Revisions

  • Crescent Nebula NGC6888, 





    
        

            Prabhakar
    Original
  • Final
    Crescent Nebula NGC6888, 





    
        

            Prabhakar
    B

Histogram

Crescent Nebula NGC6888, 





    
        

            Prabhakar