Top: FORS2 image of DE1520−44 in 0.47′′ seeing showing the primary (A), its companion (B), and the faint background object (x). Bottom: motion of B relative to A over 460 days, where every dot corresponds to one FORS2 frame and we assumed linear motion with a yearly amplitude and direction indicated by the arrow length and orientation, respectively. In both panels north is up, east is left.