Sharp-divided optical HST image in the F547M filter of MCG-6-30-15. The region studied by Raimundo et al. (2013) that we call ‘pseudo-ring’ corresponds to the large blue circle (1.1 arcsec radius) minus the small blue rectangle, and their regions labelled 1–4 are shown in red. The ISAAC slit is superimposed in green, with the centre and the two regions shown as the central and external rectangles respectively.