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.

Mynd/Myndskeið:

ESO

Um myndina

Auðkenni:eso0510a
Tegund:Athuganir
Útgáfudagur:22. mars 2005
Tengdar fréttatilkynningar:eso0510
Stærð:1261 x 1261 px

Um fyrirbærið

Nafn:Westerlund 1
Tegund:Local Universe : Star : Grouping : Cluster
Fjarlægð:15000 ljósár
Constellation:Ara
Flokkur:Star Clusters
Stars

Myndasnið

Stór JPEG
1,0 MB

Bakgrunnsmynd

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564,3 KB
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1,9 MB

Hnit

Position (RA):16 47 4.02
Position (Dec):-45° 51' 4.39"
Field of view:5.00 x 5.00 arcminutes
Stefna:Norður er 0.1° højre frá lóðréttu

Litir og síur

TíðnisviðBylgjulengdSjónauki
Sýnilegt
V
550 nmMPG/ESO 2.2-metre telescope
WFI
Sýnilegt
R
650 nmMPG/ESO 2.2-metre telescope
WFI
Innrautt
I
784 nmMPG/ESO 2.2-metre telescope
WFI

 

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