The central part of Messier 12

Centre of the globular cluster Messier 12 as observed with the FORS-1 multi-mode instrument on ESO's Very Large Telescope (Cerro Paranal, Chile). The picture covers a region of about 3.5 arcmin on a side, corresponding to about 23 light-years at the distance of Messier 12. It is based on data in five different filters : U, B, V, R and H-alpha. Here only the short exposures were used while for their scientific analysis, the authors used much longer exposures. Guido De Marchi (ESA) reduced the data and Kristina Boneva and Haennes Heyer (ESO) did the final image processing. The observations were obtained with very good conditions, the image quality ('seeing') being around 0.6 arcsec.

Crédit:

ESO

À propos de l'image

Identification:eso0604a
Type:Observation
Date de publication:7 février 2006
Communiqués de presse en rapport:eso0604
Taille:3060 x 3056 px

À propos de l'objet

Nom:Messier 12
Type:Milky Way : Star : Grouping : Cluster : Open
Distance:23000 années lumière
Constellation:Ophiuchus
Catégorie:Star Clusters

Formats des images

Grand JPEG
2,2 Mio
JPEG taille écran
347,2 Kio

Zoomable


Fonds d'écran

1024x768
357,8 Kio
1280x1024
507,8 Kio
1600x1200
658,4 Kio
1920x1200
742,4 Kio
2048x1536
964,6 Kio

Coordinates

Position (RA):16 47 14.25
Position (Dec):-1° 56' 48.17"
Field of view:3.39 x 3.39 arcminutes
Orientation:North is 0.0° left of vertical

Couleurs & filtres

DomaineLongueur d'ondeTélescope
Visible
H-alpha
656 nmVery Large Telescope
FORS1
Visible
R
600 nmVery Large Telescope
FORS1
Visible
V
554 nmVery Large Telescope
FORS1
Visible
B
420 nmVery Large Telescope
FORS1
Ultraviolet
U
360 nmVery Large Telescope
FORS1