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.

Credit:

ESO

Over de afbeelding

Id:eso0510a
Type:Observatie
Publicatiedatum:22 maart 2005
Gerelateerde berichten:eso0510
Grootte:1261 x 1261 px

Over het object

Naam:Westerlund 1
Type:Local Universe : Star : Grouping : Cluster
Afstand:15000 lichtjaren
Constellation:Ara
Categorie:Star Clusters
Stars

Image Formats

Grote JPEG
1,0 MB

Wallpapers

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

Coordinates

Position (RA):16 47 4.02
Position (Dec):-45° 51' 4.39"
Field of view:5.00 x 5.00 arcminutes
Orientation:North is 0.1° right of vertical

Kleuren & filters

BandGolflengteTelescoop
Optisch
V
550 nmMPG/ESO 2.2-metre telescope
WFI
Optisch
R
650 nmMPG/ESO 2.2-metre telescope
WFI
Infrarood
I
784 nmMPG/ESO 2.2-metre telescope
WFI

 

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