Comparison of NOT and WiFeS spectra (black and blue respectively). Top panel: wavelength range 3800–5450 Å, while bottompanel: 5600–6800 Å range. The most notable changes are (a) the emergence of the broad emission feature around rest-frame wavelength 4686 Å and (b) an increase in intensity of the high-ionisation coronal Fe lines (~5300 and 6370 Å).The WiFeS spectrum is of much higher resolution relative to the NOT spectrum, and therefore is able to better resolve narrow emission lines, such as the [S II] doublet at 6716 and 6731 Å. Neither are shown corrected for Galactic extinction. The NOT spectrum was normalised by its continuum flux in the 5100–5200 Å range (rest frame), whilst the blue and red arms of the WiFeS spectra were normalised in the 5100–5200 and 6400–6450 Å ranges respectively (rest frame).