Spectra of the equatorial ring, polar filaments and the central binary (CV) of RR Pic. The top panels present the total spectrum of the equatorial ring, the polar filaments and the CV, with the observed main lines labelled in the spectra. The bottom panels show the average spectra of the equatorial ring (blue) and polar filaments (orange) for the lines observed within a velocity range between −1250 and 1250 km s⁻¹. The flux scales are different, with the equatorial ring defined by the scale present on the left, and the polar filaments by the scale presented on the right.