17 Jun 2023
M17 also known as the Swan Nebula and Omega Nebula is an HII region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745.
M9
3 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Luminance | 330 | 1h28m | 16 |
| Green | 192 | 48m | 15 |
| Blue | 224 | 56m | 15 |
| Red | 208 | 52m | 15 |