Wallpaper author:
Geoffrey Mackey
04 Nov 2025
Rosette
Very difficult process!
Dataset from which the image was processed
Caldwell 49
4 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 97.9167 Dec 4.95
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Australia
- Transient event............................................................................................................................No
- Observed on............................................................................................................................22 Sept 2020 - 17 Nov 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 56 | 16m | 17 |
| Red | 49 | 14m | 17 |
| Green | 45 | 12m | 16 |
| Blue | 53 | 14m | 16 |
| Halpha | 1013 | 4h30m | 16 |