Results of the artificial stars experiments. Upper panels: Difference between the output and input magnitudes of the artificial stars as a function of F814W magnitude. Lower panels: Completeness as a function of F606W magnitude in the inner (r ≤ 1.0′; left panel) and outer (r > 1.0′; right panel) regions of the galaxy. Red continuous curves shows the completeness for stars in the color range of the RGB and the RC, blue dashed curves refer to stars in the color range of the old HB and the YMS (see Fig. 3, below). The blue curves start at F606W = 25.0 because in that color range we produced only artificial stars fainter than this limit, focusing on the study of the completeness in the blue HB region.