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").

Crédito:

ESO

Sobre la imagen

Identificador:eso0425a
Tipo:Observación
Fecha de publicación:17 de Agosto de 2004
Noticias relacionadas:eso0425
Tamaño:3882 x 3873 px

Sobre el objeto

Nombre:NGC 6397
Tipo:Milky Way : Star : Grouping : Cluster : Globular
Distancia:7000 años luz
Constellation:Ara
Categoría:Star Clusters

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Coordenadas

Position (RA):17 40 42.10
Position (Dec):-53° 40' 27.18"
Field of view:15.78 x 15.74 arcminutes
Orientación:El norte está a 0.0° a la derecha de la vertical

Colores y filtros

BandaLongitud de ondaTelescopio
Óptico
B
451 nmMPG/ESO 2.2-metre telescope
WFI
Óptico
V
539 nmMPG/ESO 2.2-metre telescope
WFI
Óptico
I
783 nmMPG/ESO 2.2-metre telescope
WFI