09 Sept 2022
NGC1968 (N51D) is the emission nebula surrounding the central open cluster, NGC1955, here displayed in an HST palette.
NGC 1955
8 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Halpha | 307 | 3h45m | 44 |
| OIII | 307 | 3h45m | 44 |
| SII | 286 | 3h25m | 43 |