Absorption-corrected Doppler map of EI Psc based on Hα (top) and Hβ (bottom) observations obtained by GTC. The Roche lobe of the secondary is outlined by solid lines, the tidal limitation radius is outlined by the dashed circle. The plus signs mark the positions of the stellar components, the cross marks the centre of mass, and the star symbol marks the position of the L₃ point. The middle panel shows the Doppler map based on Hα with the peak located at the position of secondary removed for better visualisation of the accretion disc structure. The features related to artefacts of the absorption subtraction are marked by the green circle in the maps and by the green line in the trailed spectra.