Wallpaper author:
David Tonucci
11 Jul 2026
CED 90 (SH2-197)
Ced 90 (also catalogued as Sh2-297 and Gum 3) is a faint emission and reflection nebula located in the constellation Canis Major. It is often associated with the Seagull Nebula and lies about 4,000 light-years away.
Dataset from which the image was processed
CED 90
2 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 106.31667 Dec -12.32611
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................24 Jan 2020 - 28 Jan 2020
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 1300 | 2h10m | 6 |
| Red | 120 | 12m | 6 |
| Green | 90 | 9m | 6 |
| Blue | 108 | 9m | 5 |