Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  HD191257  ·  HD191290  ·  HD191396  ·  HD191397  ·  HD191424  ·  HD191472  ·  HD192003  ·  HD192020  ·  HD192041  ·  HD192078  ·  HD192102  ·  HD192123  ·  HD192163  ·  HD192182  ·  HD192303  ·  HD192361  ·  HD192422  ·  HD192443  ·  HD192444  ·  HD192537  ·  HD192766  ·  HD192934  ·  HD227781  ·  HD227860  ·  HD227912  ·  HD227929  ·  HD227957  ·  HD227976  ·  HD227990  ·  And 61 more.
Getting plate-solving status, please wait...
NGC6888 - The Crescent Nebula (Reworked version, using SPPC and BlurXTerminator), Dieter Wiedenhofer
Powered byPixInsight

NGC6888 - The Crescent Nebula (Reworked version, using SPPC and BlurXTerminator)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Getting plate-solving status, please wait...
NGC6888 - The Crescent Nebula (Reworked version, using SPPC and BlurXTerminator), Dieter Wiedenhofer
Powered byPixInsight

NGC6888 - The Crescent Nebula (Reworked version, using SPPC and BlurXTerminator)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Equipment

Loading...

Acquisition details

Loading...

Description

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.[2] It is formed by the fast stellar wind from the Wolf-Rayet starWR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000[3] to 400,000[citation needed] 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.

Wikipedia

Comments

Sky plot

Sky plot

Histogram

NGC6888 - The Crescent Nebula (Reworked version, using SPPC and BlurXTerminator), Dieter Wiedenhofer