Wallpaper author:
Bernard Miller
25 May 2021
NGC 6888 - The Crescent Nebula
This is an image of NGC 6888, also known as the Crescent Nebula. It is an emission nebula about 5,000 light years away in the constellation Cygnus. 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.
Dataset from which the image was processed
NGC 6888
2 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 303.0292 Dec 38.35
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................16 Jul 2020 - 14 Dec 2021
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 930 | 2h35m | 10 |
| Luminance | 42 | 7m | 10 |
| Red | 12 | 2m | 10 |
| Green | 27 | 4m | 9 |
| Blue | 13 | 2m | 9 |