Principal component analysis (PCA) reduction in ADI using ZIMPOL for the two filters CntHα (left) and N_Hα (middle and right). The rectangle indicates the aperture used for photometry. Structures oriented along the diagonal of the images at about 0.35″ from the star are produced by the SPHERE deformable mirror (DM). The right subpanel shows the IRDIS DPI J-band contours overlaid on the ZIMPOL NHα PCA image. The intensity scale is in contrast relative to the star. North is up and east is left.