Upper panel: folded V-band profiles extracted along PA  = 32° (major axis, 2.2 m/WFI black full lines, VLT/FORS1 blue dashed lines). North-east is along PA  = 32° and SW along PA  = 212°. Lower panel: difference profiles. The folded profile along the major axis illustrates the excess of light in the NE quadrant of the NGC 3311 halo, in the range of radii 20′′ < R < 120′′, with a maximum excess of about one magnitude at R = 80′′.