Example image of a simulated cluster at z = 0.72. A cut-out of the full image, shown in red, can be seen in the right for the simulations with background galaxies only (top), with added cluster members (middle), and showing the mask used to remove bright objects (bottom). The full image and the cut outs span 300″ × 300″ and 100″ × 55″, respectively. A similar image for a simulated low-redshift cluster is provided in Fig. B.1.