Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
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Crescent Nebula NGC6888, Joan Josep Isach
Crescent Nebula NGC6888
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Crescent Nebula NGC6888

Getting plate-solving status, please wait...
Crescent Nebula NGC6888, Joan Josep Isach
Crescent Nebula NGC6888
Powered byPixInsight

Crescent Nebula NGC6888

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Description

The image is a crop of the original image, to give more prominence to the Crescent nebula.

The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William 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. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.

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Crescent Nebula NGC6888, Joan Josep Isach

In these public groups

ZWO ASI1600MM/QHY163M