Position on the sky of all the fibres. Filled squares mark HB/RGB-UVES stars with radial velocity membership. RGB-GIRAFFE and TO radial velocity members are marked with filled circles and filled triangles, respectively. Crosses mark all stars that are nonmembers according to their radial velocities. The core and half-mass radii are marked as circles close to the centre of the cluster (which is marked by an open star). The tidal radius is also marked with a circle with a dashed line. Data for the various radii were taken from the latest web-based version of Harris (1996). The FLAMES field of view is indicated by a large solid circle. The square shows the rough position of the ACS camera observations.