Dayside flux measurements of WASP-46b compared with blackbody spectral energy distributions. Our measurements are shown as blue squares for the optical bands and as red circles for the NIR bands. The blue arrow shows the 3σ upper limit in the z′ band. Blackbody profiles of four temperatures are shown, including the JHK-weighted brightness temperature T_B and three typical equilibrium temperatures (i.e., with f = 1/4,1/2,2/3, corresponding to planet-wide, dayside, no heat redistribution, respectively). The shaded area shows the uncertainties of the equilibrium temperature.