Distribution of v sin i along the eMSTO of NGC 1783. The left panel displays the verticalized color distribution of the eMSTO of NGC 1783, with the targets color-coded according to their vsini values. The central panels show the histograms of the v sin i measurements for the targets in the magnitude bins labeled at the top of each panel. The right panels represent the v sin i values as a function of the pseudo-color Δ_F438,F814W of the targets in the same magnitude bins as in the central panels.