20 Oct 2023
Catalogued as SH2-308 in the constellation Canis Major, the Dolphin-Head Nebula surrounds a massive pre-supernova Wolf-Rayet star, which has 20 times the mass of the Sun.
Sh 2-308
3 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Halpha | 1371 | 2h40m | 7 |
| Red | 171 | 20m | 7 |
| Green | 171 | 20m | 7 |
| Blue | 150 | 15m | 6 |