Overview of the SPHERE/ZIMPOL observations of the wind of EP Aqr. Top row: CntHα filter, bottom row: BHα filter. First column: total observed intensity, second column: polarised flux, third column: degree of linear polarisation (DoLP), fourth column: orientation of the polarisation vector. The beam size is shown in the bottom left of the leftmost panels. Both the intensity and polarised flux were normalized to the maximum intensity of each filter, thus preserving the degree of linear polarisation. The green circle in the centre represents the radius of the stellar photosphere as determined by the Stefan-Boltzmann relation. The white dashed line in the DoLP panels represents the orientation of the symmetry axis of the system as determined by Homan et al. (2018b).