Intensity contrast in the continuum at 5000 Å across the nMBP of Fig. 7 (section along y-axis), using degraded images obtained with a variety of PSFs that correspond to the solar telescopes listed in the text. The legend orders the telescopes according to the simulated peak contrast, from highest to lowest. The curves with degradations corresponding to DKIST and EST are close to congruent. The coordinate x = 0 corresponds to the centre of the nMBP, which is taken to be the point of lowest density in the τ = 1 isosurface. Note that the peak intensity is displaced with respect to this nMBP centre because the nMBP funnel is inclined with respect to the vertical direction, as is often the case, such as that visible in the right-hand panel of Fig. 2.