Examples of observed FEROS and HARPS spectra in the line of sight towards HD 147165 (σ Sco). The RVs are in the LSR. The vertical lines display the velocities of the fitted Gaussian subcomponents (dashed for FEROS, dotted for HARPS). It is clear that although the main and the blue components of FEROS can be also identified in HARPS, we lose some kinematic information by working with FEROS. We note that σ Sco is one of the few stars for which a triple-component fit would produce a significantly better result than a double-component fit.