Dynamical analysis of nearby clusters - Automated astrometry from the ground: precision proper motions over a wide fieldH. Bouy, E. Bertin, E. Moraux, J.-C. Cuillandre, J. Bouvier, D. Barrado, E. Solano and A. BayoA&A, 554 (2013) A101DOI: https://doi.org/10.1051/0004-6361/201220748