CMD of a mock dataset. The solid line represents the Dartmouth isochrone for a population of 13 Gyr old stars with metallicity [Fe/H]= −2.5, corrected for distance and extinction. The points correspond to the generated star-like sources. This mock population was generated with the magnitude cuts (as shown by dashed lines) and physical parameters of Reticulum II, a Kroupa IMF, a binary fraction of 0.5, and under the assumption of no PBH effect (f_PBH = 0).