Radial velocities of the emission peaks, superimposed onto a grey-scale representation of the reconstructed [O III] image from the IFU data. The FOV = 40″ × 40″. Radial velocities are indicated by lines, whose colour indicates if emission is blue- or red-shifted, and whose length is proportional to the absolute value of the velocity. Cyan and pink lines represent blue shifted velocities smaller than −5 km s⁻¹ and redshifted smaller than +5 km s⁻¹respectively. The length of the cyan and pink lines are constant because otherwise they would be too small to be visible. The white X-point marks the position of the central star. The distance used for the linear size is taken from this work: 178 pc.