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Thursday, September 29th, 2011
NGC6888 - Crescent Nebula
 
Wikipedia Reference: The Crescent Nebula (also known as NGC 6888Caldwell 27Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light years away. 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 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

Exposure: 5.7 hours (138x150 seconds over 3 days)
 
Processed for bias, darks, flats, and a light amount of Photoshop, XGradient, Astronomy Tools
 
Mount: HEQ5 Pro
CCD: OSC - Color QHY8L
Telescope: Orion Mak 150mm
Imaging: QHY8L + LPS IDAS
Sensor temp: -15c
Location: Portland Downtown
 
Enjoy it!
 
M.


Image Gallery For This Session
NGC6888
   

NGC6888.jpg
Click picture above for larger version
If the picture seems too bright or too dark, try adjusting the brightness below.
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