Complete set of observations using both TRAPPIST-South and TRAPPIST-North telescopes at La Silla Observatory and Oukaimeden Observatory, respectively. Isophote levels in Solar Disk Units (SDUs) are displayed for each row on the right-hand side. In all cases, north is up and east to the left. The observational conditions of each image is given in Table 1. Images 1, 7, 10, 11, 18, 21, 24, 25, 28, and 30 are marked with †, which are used for comparison with the model in Fig. 8.