Images and contour plots of the CO⁵BOLD-model st28gm06n052 simulated with RADMC-3D at a distance of 200 pc as convolved by Gaussian beams that correspond to the angular resolutions that VLTI can achieve (see text for details). The beam FWHMs are indicated by the cyan (top row) or green (bottom row) circles in the panels’ lower left corners. Stellar average radius, 1.65 au, is indicated with the dotted circle in the centre of the panels. The red contours in the bottom row show flux densities that are ≥0.1 times the image’s maximum flux density, and the orange patch in the bottom λ = 10 μm plot is an area of dust where we measure the patch flux density in Table 4.