25 Dec 2023
NGC 3503 is a bright and small (~3′ in diameter) optical emission nebula in the constellation of Carina , ionized by early B-type stars belonging to the open cluster Pis 17.
NGC 3503
3 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Halpha | 600 | 1h30m | 9 |
| SII | 600 | 1h30m | 9 |
| OIII | 600 | 1h20m | 8 |