2D maps of average emission-measure-weighted velocity along the line of sight, v_los, for shocked Si/S (upper panel) and Fe (lower panel) derived from run CAS-15MS-1ETA. The approximate velocity range is ±4000 km s⁻¹ (see color bar on the right in units of 10³ km s⁻¹). These images correspond to effective Doppler maps derived from observations. The black contour represents the projection of the remnant outline on the plane of the sky.