Fig. 1
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Left: sky map with stars observed by SMASH (gray points) and those observed in this work (large magenta circles) in the field of HW 64; the symbol size is proportional to the g brightness of the star. Filled magenta circles represent cluster members (see details in Section 3). Right: SMASH CMD with the isochrone (Bressan et al. 2012, PARSEC v1.2S) corresponding to the distance, reddening, metallicity, and age of the cluster (Piatti 2022) superimposed.
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