code: def _load_data(self, band):
          
          # `band` should be 'nuv' or 'fuv'
          df = bandpass_data_frame('filter_galex_' + band + '.dat', 'wlen resp')
          df.resp *= df.wlen # QE -> EE response convention.
          return df
docs: From Morrissey+ 2005, with the actual data coming from
          http://www.astro.caltech.edu/~capak/filters/. According to the latter,
          these are in QE units and thus need to be multiplied by the wavelength
          when integrating per-energy.