01 Nov 2026
NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia. It is also associated with open cluster IC 1590, several Bok globules and the multiple star. It collectively forms Sh2-184, spanning over a larger area of 40 arcmin. Colloquially, NGC 281 is also known as the Pacman Nebula.
NGC 281 PacMan Nebula
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Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| SII | 489 | 19h | 140 |
| Halpha | 600 | 26h40m | 160 |
| OIII | 600 | 19h40m | 118 |