Cross-correlation function time series for the fiducial spectral template showing that the exoplanet’s Doppler signature is visible on both nights. Top rows: CCF value in the barycentric rest frame (left) or WASP-189 b’s literature rest frame (right; assuming the literature values of K_p and v_sys listed in Table 1). The planet’s expected radial velocity trail (RV) is drawn as a white dotted line. Pre-eclipse, post-eclipse, and eclipsed phases are indicated. Bottom row: mean values of the CCF in each rest frame for a subset of orbital phases as shown in the legend.