The HSTPROMO collaboration studies a set of related Hubble Space Telescope (HST) research projects, with overlapping sets of investigators, all aimed at improving our dynamical understanding of stars, clusters, and galaxies in the nearby Universe through measurement and interpretation of their proper motions (PMs). ... Local Group and Star Cluster Dynamics from HSTPROMO: The Hubble Space Telescope Proper Motion Collaboration ( van der Marel et al. 2014, in ASP Conf. ... GO; PI: Chaname ; CoI list ) . ...