Left panel: CMD of the MSTO and red clump region of NGC 1783 together with overplotted isochrones at three different ages that cover the extent of the MSTO. Right panel: fitted SFH of NGC 1783 using only the MSTO region (blue solid line) and only the red clump region (red dashed line) along with 1σ error bars showing the statistical errors. The error bars result from bootstrapping the data (see text for details).