Venus as observed in total flux F (left) and polarized flux U (right) through the Hα continuum filter (see Table 1). Due to Venus’s orientation, the planetary scattering plane makes an angle of about 45° with ExPo’s optical plane (the two orthogonal directions along which ExPo measured U are indicated below the image). The spatial resolution is approximately 775 km at the subobserver point on Venus’s disk.