SED template spectra for an old elliptical galaxy (red), a post-starburst 1 Gyr after SF (green), and an active starburst (blue) redshifted to observed wavelengths at the cluster redshift of XDCP J0044.0-2033 (bottom axis) and in restframe units (top axis). The main filter transmission curves are plotted in black at the bottom of the panel with their names indicated. The corresponding restframe wavelength coverage is shown on top.