In this study, we present kinematics of the very centers of Omega Centauri and 47 Tucanae, obtained on the VLT using Fabry-Perot observations behind an adaptive optics system. The Fabry-Perot technique provides a unique tool to probe the central regions of crowded fields. Combined with HST photometry, these data are compared to dynamical models of the central regions of the clusters, setting constraints on the central black hole masses.
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