Autore dello sfondo:
Michelle Ashford
13 Nov 2023
The Trifid Nebula
The Trifid Nebula, M20, was discovered by Charles Messier on 5 June 1764. It is a large star-forming region located in Sagittarius, has a diameter of 42 ly and is approx. 5,200 ly from Earth.
The object consists of three types of nebula and an open star cluster. The open cluster is surrounded by an emission nebula, a reflection nebula, and a dark nebula (gives M20 the trifurcated appearance). The dark nebula was catalogued by Edward Barnard and is designated as B85.
Dataset da cui è stata elaborata l'immagine
M20
3 credit
- Tipo di obiettivo............................................................................................................................Emission Nebula
- Fotocamera............................................................................................................................QHY 600M
- Coordinate dell'obiettivo............................................................................................................................RA 270.6038 Dec -23.0018
- Emisfero............................................................................................................................Southern
- Posizione del telescopio............................................................................................................................Chile
- Evento transitorio............................................................................................................................No
- Osservato il............................................................................................................................16 Jun 2023 - 25 Oct 2023
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Halpha | 1000 | 2h30m | 9 |
| Blue | 200 | 30m | 9 |
| Luminance | 100 | 15m | 9 |
| Red | 100 | 15m | 9 |
| Green | 100 | 15m | 9 |