Early-type galaxies with 0.40 ≤ z_phot ≤ 0.52 (black dots). Overlaid are galaxies with EMMI and SDSS spectra within 0.43 < z_spec < 0.46 (red dots). Blue dots with black circles have 0.32 < z_spec < 0.33. The cluster at RA = 340.2 Dec =  −9.35 is a foreground object (z = 0.326) superimposed over a sub-structure at z = 0.456. The solid blue contours represent the S/N of the mass reconstruction, starting at 2σ and increasing in steps of 1.0σ; dashed contours represent negative values (2σ and 3σ). Green contours trace the smoothed luminosity density I (in L_i, ⊙    Mpc^-2) of the early-type member galaxies in logarithmic units, starting with Log₁₀(I) = 9.6 and increasing in steps of 0.3. The smoothing length for the surface mass density and luminosity density was 4.′0. The upper and right axes give the physical scale at the main cluster redshift of z = 0.447. Compare to Fig. B.1 in the appendix for late-type galaxies in the same redshift range.