Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  34 Cyg)  ·  Crescent Nebula  ·  IC 4996  ·  NGC 6888  ·  Permanent nova (P Cyg  ·  The star Revenant of the Swan
NGC 6888 - The Crescent Nebula (HOO), Rouven Spaar
NGC 6888 - The Crescent Nebula (HOO)
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NGC 6888 - The Crescent Nebula (HOO)

NGC 6888 - The Crescent Nebula (HOO), Rouven Spaar
NGC 6888 - The Crescent Nebula (HOO)
Powered byPixInsight

NGC 6888 - The Crescent Nebula (HOO)

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Description

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.

Planned on taking RGB frames for the stars but I really needed the sleep.

Taken on thursday, 21.07.2022

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    NGC 6888 - The Crescent Nebula (HOO), Rouven Spaar
    Original
  • NGC 6888 - The Crescent Nebula (HOO), Rouven Spaar
    B

B

Title: NGC 6888 (Starless)

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NGC 6888 - The Crescent Nebula (HOO), Rouven Spaar