Residuals from the fitting of 35 deconvolved AO images of (22) Kalliope (taken from Ferrais et al. 2022), with contributions to χ² of individual pixels plotted in colour. The projected shape changes due to rotation and viewing geometry. The pixel scale is 3.6 mas pxl⁻¹. After the convergence of the shape parameters, with help of the polygonal algorithm and ‘cliptracing’, the total is , n_ao2 = 22 843. Remaining systematics are partly due to rotation, which changes the projected shape during an exposure in a non-trivial way. The observed image of Linus was not fitted (cf. red dots in the upper-right corner).