Wallpaper author:
Astrophotography Volkssterrenwacht A Pien
24 Jul 2023
M20 - Trifid nebula
The object is an unusual combination of an open cluster of stars, an emission nebula, a reflection nebula (the mainly blue portion), and a dark nebula (the apparent 'gaps' in the former that cause the trifurcated appearance, also designated Barnard 85).
Dataset from which the image was processed
M20
3 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................QHY 600M
- Target coordinates............................................................................................................................RA 270.6038 Dec -23.0018
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................16 Jun 2023 - 25 Oct 2023
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 1000 | 2h30m | 9 |
| Blue | 200 | 30m | 9 |
| Luminance | 100 | 15m | 9 |
| Red | 100 | 15m | 9 |
| Green | 100 | 15m | 9 |