Autore dello sfondo:
Steve Teel
10 Dec 2025
The Cosmic Keyhole NGC1999
Processed using APP, PixInsight with GraXpert. MGC, Blur, Noise, and StarXTerminator, ContinuumSubtraction, ImageBlend, GHS, and Affinity Photo 2. GraXpert applied to Ha image. Four iterations of the SPFC-MGC combination were applied to the LRGB image to achieve negligible gradient correction.
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 |