The search for faint members of the Pleiades. I - A proper motion membership study of the Pleiades to M(V) of about 12.5

A new set of probable Pleiades cluster members, based on an unbiased survey of stars within a 4×4 degree region centered near Alcyone is identified. Accurate coordinates, V magnitudes, V-I colors and membership probabilities are determined. The Pleiades luminosity function is estimated