Entropy-isosurfaces (left) of the SN shock (grey) and of the high-entropy bubbles (green), ray-casting images of the density (middle), and entropy distribution in a cross-sectional plane (right) for models W15-1 (top) and L15-2 (bottom) at about 1.3 s and 1.4 s after core bounce. The viewing directions are normal to the plane spanned by the NS kick and spin vectors of each model, which also defines the plane for the entropy slices. The SN shock has an average radius of 13 000 km and 14 000 km for models W15-1 and L15-2, respectively (a length of 5000 km is given by yardsticks below the left images). The kick and spin directions are indicated by the white and black arrows, respectively, in the middle figures. The NS locations are marked by black crosses in the right plots. The images in the middle correspond roughly to the projections of the density distribution on the observational planes. Dilute bubble regions are light-colored in white and yellow, while dense clumps appear more intense in reddish and bluish hues. The purple circular areas around the NS represent the dense inner region of the essentially spherically symmetric neutrino-driven wind. The wind is visible in green in the right images and is bounded by the aspherical wind-termination shock. The NS is clearly displaced from the geometrical center of the expanding shock in the direction of the kick vector pointing to the lower left for model W15-1. The NS in model L15-2 has a much smaller kick velocity than in model W15-1, and does not show any clear displacement but remains located roughly at the center of the expanding ejecta shell.