Top row: synthetic solar disk images with transiting planet computed at [7620–7640] Å (left, see Table 2), [25 000–25 250] Å (center), [39 000–51 000] Å (right) for the Sun (Table 1). The prototype planet for the transit is the terrestrial planet (Table 3). For the sake of clarity, we assumed transit data measurements every 20 min in these plots. However, in the analysis (Figs. 9 and 10), we simulated transits measurements every 3 min. Bottom row: same as above with solar images computed at [7620–7640] Å and the prototype Neptune (left) and the hot Jupiter (center).