Globular cluster NGC 6397

The globular cluster NGC 6397, located at a distance of approx. 7,200 light-years in the southern constellation Ara. It has undergone a "core collapse" and the central area is very dense. It contains about 400,000 stars and its age (based on evolutionary models) is 13,400 ± 800 million years. The photo is a composite of exposures in the B-, V- and I-bands obtained in the frame of the Pilot Stellar Survey with the Wide-Field-Imager (WFI) camera at the 2.2-m ESO/MPI telescope at the ESO La Silla Observatory. It was prepared and provided by the ESO Imaging Survey team. The spikes seen at some of the brighter stars are caused by the effect of overexposure (CCD "bleeding").

Bildnachweis:

ESO

Über das Bild

ID:eso0425a
Typ:Beobachtung
Veröffentlichungsdatum:17. August 2004
Dazugehörige Veröffentlichungen:eso0425
Größe:3882 x 3873 px

Über das Objekt

Name:NGC 6397
Typ:Milky Way : Star : Grouping : Cluster : Globular
Entfernung:7000 Lichtjahre
Constellation:Ara
Kategorie:Star Clusters

Bildformate

Großes JPEG
7,4 MB

Skalierbar


Bildschirm-Hintergrundbilder

1024x768
561,4 KB
1280x1024
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1600x1200
1,1 MB
1920x1200
1,3 MB
2048x1536
1,7 MB

Koordinaten

Position (RA):17 40 42.10
Position (Dec):-53° 40' 27.18"
Field of view:15.78 x 15.74 arcminutes
Orientierung:Die Nordrichtung liegt 0.0° rechts zur Vertikale

Farben & Filter

SpektralbereichWellenlängeTeleskop
Optisch
B
451 nmMPG/ESO 2.2-metre telescope
WFI
Optisch
V
539 nmMPG/ESO 2.2-metre telescope
WFI
Optisch
I
783 nmMPG/ESO 2.2-metre telescope
WFI