Nuclear spectrum of NGC 5427 at rest-frame wavelengths after correction for Galactic extinction and subtraction of the stellar continuum. The spectrum is summed over a 3 × 3 pixel (i.e. ~3″ × 3″) aperture centred on the nucleus. The principal lines are indicated together with wavelength of the transition from the blue to the red WiFeS spectrum with their different spectral resolutions (3000 and 7000, respectively). This is a typical Seyfert 2 spectrum. Note that, as mentioned in Sect. 2, the absolute flux scale is uncertain. Based on the available photometric standard stars during the observing night, we estimate the flux uncertainty amounts to a factor of ~1.6.