Graphical representations of the cross-correlation data cube for METIS observations. All parameters were kept the same as for the simulation presented in Sect. 4. However, for illustrative purposes, the exposure time was increased such to show the planet signal at a S/N of ~20, and the planet velocity was increased by a factor of 2 to enhance the offset in velocity space. The cross-correlation data cube is renormalized as in the bottom panel of Fig. 3. A short movie from this data cube, rotating in sky and velocity angle, is available at http://www.strw.leidenuniv.nl/~snellen/.