Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  34 Cyg)  ·  34 P Cyg  ·  Crescent Nebula  ·  HD190771  ·  HD190863  ·  HD191024  ·  HD191045  ·  HD191176  ·  HD191225  ·  HD191257  ·  HD191290  ·  HD191396  ·  HD191397  ·  HD191424  ·  HD191472  ·  HD191703  ·  HD192003  ·  HD192020  ·  HD192041  ·  HD192078  ·  HD192079  ·  HD192102  ·  HD192123  ·  HD192163  ·  HD192182  ·  HD192303  ·  HD192361  ·  HD192422  ·  HD192443  ·  HD192444  ·  And 206 more.
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Crescent Nebula in HOO, Jeffery Richards
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Crescent Nebula in HOO

Getting plate-solving status, please wait...
Crescent Nebula in HOO, Jeffery Richards
Powered byPixInsight

Crescent Nebula in HOO

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Description

The Crescent Nebula in HOO taken with a first generation Borg 77ED and my QHY268M. This image is cropped to remove the really bad areas but you can still see this scope really needs a flattener to help with the APS-C sized chip.

The Crescent Nebula (also known as NGC 6888Caldwell 27Sharpless 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-Rayetstar WR136 (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 in HOO, Jeffery Richards
    Original
  • Final
    Crescent Nebula in HOO, Jeffery Richards
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Description: Restored cropped area with BlurXTerminator and revised color.

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Crescent Nebula in HOO, Jeffery Richards