The super star cluster Westerlund 1
Composite image of the super star cluster "Westerlund 1" from 2.2-m MPG/ESO Wide-Field Imager (WFI) observations. The image covers a 5 x 5 arcmin sky region and is based on observations made in the V-band (550 nm, 2 min exposure time, associated to the blue channel), R-band (650nm, 1 min, green channel) and I-band (784nm, 18 sec, red channel). Only the central CCD of WFI was used, as the entire cluster fits comfortably inside it. The foreground stars appear blue, while the hot massive members of the cluster look orange, and the cool massive ones come out red.
Créditos:ESO
Sobre a imagem
Id: | eso0510a |
Tipo: | Observação |
Data de divulgação: | 22 de Março de 2005 |
Notícias relacionadas: | eso0510 |
Tamanho: | 1261 x 1261 px |
Sobre o objeto
Nome: | Westerlund 1 |
Tipo: | Local Universe : Star : Grouping : Cluster |
Distância: | 15000 anos-luz |
Constellation: | Ara |
Categoria: | Star Clusters Stars |
Papéis de parede
Coordenadas
Position (RA): | 16 47 4.02 |
Position (Dec): | -45° 51' 4.39" |
Field of view: | 5.00 x 5.00 arcminutes |
Orientação: | O norte está a 0.1° à direita da vertical |
Cores e filtros
Banda | Comprimento de onda | Telescópio |
---|---|---|
Óptico V | 550 nm | MPG/ESO 2.2-metre telescope WFI |
Óptico R | 650 nm | MPG/ESO 2.2-metre telescope WFI |
Infravermelho I | 784 nm | MPG/ESO 2.2-metre telescope WFI |