IRDIS-DPI H-band and ZIMPOL P2 VBB-filter Q_φ (top row) and U_φ (bottom row) images. North is up, east is left. All images are normalized to the highest disk brightness. The dynamical range for the color scaling is the same for the two images of the top (1000) and bottom row (20), respectively. An apodized Lyot coronagraph with a mask diameter of ~185 mas was used. The inner 0.̋18 are masked, represented by the black circular area. Negative values of U_φ are saturated at dark blue and dark red color, respectively.