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").

Credit:

ESO

Over de afbeelding

Id:eso0425a
Type:Observatie
Publicatiedatum:17 augustus 2004
Gerelateerde berichten:eso0425
Grootte:3882 x 3873 px

Over het object

Naam:NGC 6397
Type:Milky Way : Star : Grouping : Cluster : Globular
Afstand:7000 lichtjaren
Constellation:Ara
Categorie:Star Clusters

Afbeeldingstypen

Grote JPEG
7,4 MB

Inzoomen


Achtergrond

1024x768
561,4 KB
1280x1024
848,9 KB
1600x1200
1,1 MB
1920x1200
1,3 MB
2048x1536
1,7 MB

Coordinates

Position (RA):17 40 42.10
Position (Dec):-53° 40' 27.18"
Field of view:15.78 x 15.74 arcminutes
Orientation:North is 0.0° right of vertical

Kleuren & filters

BandGolflengteTelescoop
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