Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
Getting plate-solving status, please wait...
NGC 6888 Cresent nebula, Dickvantatenhove
NGC 6888 Cresent nebula
Powered byPixInsight

NGC 6888 Cresent nebula

Getting plate-solving status, please wait...
NGC 6888 Cresent nebula, Dickvantatenhove
NGC 6888 Cresent nebula
Powered byPixInsight

NGC 6888 Cresent nebula

Equipment

Loading...

Acquisition details

Loading...

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 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. It is a rather small object located about 2 degrees SW of Sadr. 
This is a Bi color picture with 2 hour data.

Comments

Sky plot

Sky plot

Histogram

NGC 6888 Cresent nebula, Dickvantatenhove