The z − H vs. H color − magnitude diagram of the XMMU J0302.1-0000 cluster’s field. Red boxes mark secure spectroscopic cluster members. Galaxies with projected cluster centric distance less than 30″ are shown as red circles, with distances between 30″−60″ as green triangles. Galaxies with concordant redshift at  >60″ distances have blue squares. The dashed black line marks the 50% completeness limit. The apparent H band magnitude of an L^∗ galaxy at cluster redshift (z = 0.647) is shown with a vertical blue dotted line. We overplot the z − H color of a solar metallicity SSP model with formation redshift z_f = 5 and age  ~6.3 Gyr (corresponding to the cluster redshift) as a reference (horizontal red dashed line). The presence of a red sequence with analogous colors is evident.