Deconvolution accuracy of the moment sizes for the power-law sources and (Eq. (8)), separated from the flat (top), convex (middle), and concave (bottom) backgrounds, for background over-subtraction levels 0 ≤ ϵ_l ≤ 0.3 and size factors 1 ≤ f_k ≤ 2. The ratio of the modified deconvolved sizes C_j to the true model size M (Table 1) is plotted as a function of the source resolvedness . The dashed curves indicate discontinuous jumps in between j and j + 1 (at certain O_j values), caused by the jumps in the footprint radii Θ_ℳjk- (Eq. (7)) and sizes (cf. Fig. A.3). For reference, the thin black curves display D_j/M and the dashed curves visualize (O_j/2)/M for ϵ_l = {0, 0.3} and f_k = {1, 2}. Corresponding plots for the deconvolved half maximum sizes are presented in Fig. 6.