CFHT/MegaCam g-band surface brightness map of NGC 5557. The surface brightness scale in mag arcsec−2 is shown to the right. It ranges between 23 and 30 mag arcsec−2. The faint foreground stars have been subtracted. North is up and East towards left. The field of view is 37.0 × 22.7 arcmin2(418 × 256 kpc, at the distance of the galaxy).
(Duc et al., 2014)