Filter curves of the assembled multi-wavelength data set (coloured lines), overlaid with a galaxy template from Smith et al. (2012). The SED has been normalised to have a peak flux of 1, and it is shown both at z = 0 (in grey) andwith the wavelength axis shifted to z = 1 (in silver) to give the reader an impression of how the excellent multi-wavelength coverage in ELAIS-N1 samples a galaxy’s SED.