SPHERE/IRDIS total intensity images of the southeast side of the disk for the four best epochs (Aug. 2014, May 2015, Jun. 2016, and May 2017). The data are processed with the LOCI algorithm and multiplied with the stellocentric distance (to give more weight to the outer parts). The star is at the right of the image. The field of view is 6.5′′ × 1.0′′, and the intensity scale is adapted for each epoch. Vertical dotted lines are drawn to roughly locate on the first epoch (Aug. 2014) the positions of the main features (SE5 and SE4 as well as an intensity enhancement C-SE1 at ~4.7′′). The top and bottom axes are graduated every 0.5″. A corresponding animation is available online.