Autore dello sfondo:
Peter LeFebvre
23 Feb 2026
NGC 1999
NGC 1999 AKA The Cosmic Keyhole
This nebulous area in Orion is noteworthy for the keyhole like structure at its center. There were some column defects in the data that were easy to address thanks to a tutorial from @Nik Szymanek. Lots of integration time and enjoyable to process.
Distance: 1,500 light-years
Apparent Magnitude: 9.5
Constellation: Orion
Object Type: Reflection Nebula
Dataset da cui è stata elaborata l'immagine
NGC 1999
20 credit
- Tipo di obiettivo............................................................................................................................Emission Nebula
- Fotocamera............................................................................................................................FLI Proline PL16803
- Coordinate dell'obiettivo............................................................................................................................RA 84.1042 Dec 6.7
- Emisfero............................................................................................................................Northern
- Posizione del telescopio............................................................................................................................United States of America
- Evento transitorio............................................................................................................................No
- Osservato il............................................................................................................................15 Nov 2022 - 21 Jan 2023
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Luminance | 3429 | 20h | 21 |
| Red | 2571 | 15h | 21 |
| Green | 2700 | 15h | 20 |
| Blue | 2700 | 15h | 20 |
| Halpha | 3600 | 20h | 20 |