Final cADI images of the five stars observed with SPHERE/ZIMPOL. The panels show the H_α (left) and continuum (middle) images, and their difference (ASDI image, right). All the panels show a FOV of ~0.6″. × 0.6″. In the case of LkCa15, we mark the position of the candidate LkCA15b with a red open circle, while in the case of TW Hya and HD163296 we mark point-like faint detections with magenta circles (see text).