Globular clusters in MACS0416 (green dots) superposed on the JWST image. The seven yellow circles mark the positions of massive halos for which the lens model places good constraints on the halo masses. The size of each circle indicates the radius within which the mass was computed. The magenta contours are the convergence map, κ, from the lens model computed at z = 3 and in intervals of 0.1, starting at κ = 0.5.