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.

Kilde:

ESO

Om bildet

ID:eso0510a
Type:Observasjon
Publiseringsdato:22. mars 2005
Relaterte pressemeldinger:eso0510
Størrelse:1261 x 1261 px

Om objektet

Navn:Westerlund 1
Type:Local Universe : Star : Grouping : Cluster
Avstand:15000 lysår
Constellation:Ara
Kategori:Star Clusters
Stars

Bildeformater

Stor JPEG
1,0 MB
Medium JPEG
530,1 KB

Skrivebordsbakgrunner

1024x768
564,3 KB
1280x1024
1,0 MB
1600x1200
1,4 MB
1920x1200
1,5 MB
2048x1536
1,9 MB

Koordinater

Position (RA):16 47 4.02
Position (Dec):-45° 51' 4.39"
Field of view:5.00 x 5.00 arcminutes
Orientering:Nord er 0.1° til høyre for vertikalen

Farger og filtre

BåndBølgelengdeTeleskop
Optisk
V
550 nmMPG/ESO 2.2-metre telescope
WFI
Optisk
R
650 nmMPG/ESO 2.2-metre telescope
WFI
Infrarødt
I
784 nmMPG/ESO 2.2-metre telescope
WFI

 

Se også