THE CRESCENT NEBULA

THE CRESCENT NEBULA
2 months ago
0

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. It is a rather faint object located about 2 degrees SW of Sadr. For most telescopes it requires a UHC or OIII filter to see.
SPECIFICATIONS
SPECIFICATIONS
Telescope ..........................................................................................................................................................................................................................
Telescope
SPA-3 Takahashi FSQ-106EDX4
Camera ..........................................................................................................................................................................................................................
Camera
FLI PL16083
Location ..........................................................................................................................................................................................................................
Location
SPAIN
Date of observation ..........................................................................................................................................................................................................................
Date of observation
02 Jul 2021
Filters ..........................................................................................................................................................................................................................
Filters
HOO
Processing ..........................................................................................................................................................................................................................
Processing
StellaImage9 AffinityPhoto Denise Ai
Use our web app to take stunning images of the night sky.
Try it free
See all photo