Illustration of the ISN velocities for different positions. The orbit of STEREO-A is indicated with a thin black line. Three pairs of example trajectories (primary with solid lines, and secondary with dashed lines) leading to the focusing cone (yellow), to the crescent (light pink), and an intermediate position (magenta) are shown. In addition, a grid of ISN velocities (in velocity space) is given for different positions in the inner heliosphere. The solid lines refer to the primary trajectory and the dashed lines to the secondary trajectory.