Top: Distribution of stars in the observed field. The two circles mark the limits of the regions used for decontamination: stars inside the inner circle are part of the cluster region, and stars outside the outer circle are all assigned to the field. Middle: The corresponding CMDs. Bottom: Decontaminated CMD of the inner region. Filled, colored circles are considered members (with membership probabilities indicated by the color bar), and hollow, black circles are discarded as field stars.