Position-velocity (PV) plots in the [O III] λ5007 (red dots) and [N II] λ6584 (blue dots) of the CSPN of A 58 along the PA = 60° and PA = 150°. Positions have been obtained using a 2D Gaussian fit of the emission at each spectral channel (see text for details). The x-axis are showed in LSR system (bot) and respect to the systemic velocity (top) for both panels. The systemic velocity of the ejecta and the location of the CSPN are marked by vertical and horizontal dashed lines, respectively.