30 Jul 2024
The Helix nebula (NGC 7293) is a tube-shaped planetary nebula, an expanding shell of gas around a dying star. Full details on Astrobin:
https://www.astrobin.com/5oux41/
NGC 7293
13 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 800 | 10h | 45 |
| Luminance | 193 | 2h25m | 45 |
| Blue | 173 | 2h10m | 45 |
| Green | 164 | 2h | 44 |
| Red | 164 | 2h | 44 |