Search for individual opaque moonlets using the scans shown in Figs. 1 and 2. The equivalent width E_m is defined in Eq. (1). The distance s is counted along the path of the star in the plane of the sky, starting from the first point of observation at the respective sites. The grey bands have heights of ± 1 km and are centered on E_m = 0 km (solid horizontal lines), so that to provide the scale for E_m.