Top panel: average out-of-transit stellar CCF. Bottom panel: tomography of CCF residuals for the 1-UT transit, in the stellar restframe. The stellar systemic velocity V_sys is still not subtracted. Horizontal white lines represent the beginning and end of the transit. The dotted black line shows the theoretical planetary RV. Differences between the stellar CCF residuals before and after the transit, possibly due to stellar activity, are noticeable.