CMD of NGC 6440 and cluster member selection. Left-hand panel: CMD of NGC 6440 obtained with a combination of the F115W and F200W NIRCam@JWST filters. Black and red dots are high-quality photometry stars flagged as cluster member and field interlopers, respectively. Right-hand panels: vector-point-diagram (i.e., proper motion along RA vs. proper motion along Dec) in different magnitude ranges: stars within and beyond the red circles are flagged as cluster members and field interlopers, respectively.