28 Dec 2025
The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant emission nebula with an H II region located in the constellation Sagittarius. Discovered by Giovanni Hodierna in 1654, it is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes (the other being the Orion Nebula).
M8
5 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Luminance | 117 | 35m | 18 |
| Red | 124 | 35m | 17 |
| Green | 88 | 25m | 17 |
| Blue | 88 | 25m | 17 |
| Halpha | 1094 | 5h10m | 17 |