Telluric-corrected HARPS observations at the sodium doublet, obtained on two nights nearly one year apart, vertically offset for clarity. On both nights, significant disk line absorption is visible, as well as redshifted lines attributed to a form of exocomet activity. Labels in black indicate the nights of observation, the number of spectra taken, and the total exposure time. The night-average spectrum prior to telluric correction is overplotted in orange, demonstrating the relative positions of the telluric water lines.