PSFs derived from the reduced R-band image of NGC 5907 (Fig. C.1). The azimuthal average is drawn as magnitude versus radius. The left-hand set of lines used individually set background values. The set of lines that are offset by 60′′ were all derived using the background value 1760 ADU. PSF_MBH is drawn with a dotted line, together with its error bars. The saturated-star PSFs are drawn with solid black (1) and dash-dotted (2) lines – PSF is the average of these two PSFs. The PSF of the remaining five bright stars are drawn with coloured lines out to a maximum radius r_max, cf. the legend and Table C.2.