Line-of-sight velocity relative to the cluster main component central redshift z = 0.395 plotted against the projected distance to the cluster centre (as defined by the distribution of galaxies/BCG). Red diamonds correspond to AGNs and blue dots to SF galaxies according to the H97 criterion (see Sect. 8). The dotted vertical line marks the virial radius of 1.7 Mpc (Treu et al. 2003). The dashed-dotted horizontal lines correspond to the radial velocity limits fully covered within the field of view of both OSIRIS TF pointings (see Sect. 3 and Eq. (2)). The small black points correspond to galaxies from M05 with spectroscopic redshifts, including both passive and star-forming objects.