Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888  ·  Sh2-105
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NGC6888 Crescent Nebula, 



    
        

            Mark Eby
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NGC6888 Crescent Nebula

Getting plate-solving status, please wait...
NGC6888 Crescent Nebula, 



    
        

            Mark Eby
Powered byPixInsight

NGC6888 Crescent Nebula

Acquisition details

Dates:
June 4, 2016
Frames:
24×600(4h)
Integration:
4h
Avg. Moon age:
28.82 days
Avg. Moon phase:
0.57%

RA center: 20h12m08s.56

DEC center: +38°2051.0

Pixel scale: 1.891 arcsec/pixel

Orientation: 0.865 degrees

Field radius: 0.568 degrees

More info:Open 

Resolution: 1800x1200

File size: 447.7 KB

Locations: SDAA Dark Sky Observing Site, Tierra del Sol, CA, United States

Data source: Traveller

Description

NGC6888 Crescent Nebula

The Crescent Nebula is an emission nebula about 5000 light-years away and 25 light-years across. It is formed by fast stellar wind from a nearby star energizing slower moving wind previously ejected by the star when it became a red giant about 300,000 years ago. Visually the nebula is a rather faint object which looks like a crescent or Euro-sign in a large telescope, giving it another name: the "Euro Sign Nebula". North is at the top.

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NGC6888 Crescent Nebula, 



    
        

            Mark Eby