Diagnostic plots for GC001. Stars within 2 arcmins from the nominal cluster center were used to perform the clustering algorithm. The spatial distribution of stars (Group 2 defined by the code) that comprise the GC are shown in orange points (upper left), plotted in the VPD (bottom left) and in the CMD. We note that the distribution of cluster stars is shifted with respect to the contours of the total distribution of stars in the VPD.