Cleaning procedure from field interlopers via PMs. Left panel: CMD of the stars included in the MAD footprint with measured PMs from Massari et al. (2015). Middle panel: CMD of the field population as selected from the VPDs, that is stars with PMs not compatible with that of Terzan 5. Right panel: PM-cleaned CMD of Terzan 5 obtained by considering only likely cluster members selected from the VPDs. Rightmost column: VPDs of the measured stars divided in 5 bins of 1.5 mag each, starting at I_DRC = 16.5. Black dots represent stars within a radius of 1.5 mas yr⁻¹ and correspond to likely cluster members according to the criterion of Massari et al. (2015).