Example spectrum with an extended wavelength coverage obtained from the best-fit STARLIGHT model (in orange) compared to the original MUSE data (in black). The best fit is done on the masked spectra (in blue). The transmission curves of the DES filters are shown as shaded regions. We also show the observed wavelengths of the redshifted spectra at z = 0.5, 1, and 2 in this figure as the purple, green, and red lines, respectively. Vertical offsets were applied for better visualisation. On top of the plot we identify the observed strong emission lines.