Fig. 3.
Upper panel: photometric error parameter for the resolved stars found DAOPHOT II/ALLSTAR in our GTC images as a function of magnitude in the g (top) and r-bands (bottom), including only sources with sharpness parameter between −0.5 and 0.5. Lower panel: fraction of artificial stars recovered as a function of input magnitude in g (black line) and r-bands (red line). The horizontal dashed line marks the magnitude corresponding to a completeness of 50% (see Sect. 2.2).
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