paranal_sky.fits
  -- Generated from SDSS code and then ingested in XSpectrum1D format

sky_LRISb_600.fits  
  -- Taken from LowRedux (lris_sky_blue_600.sav)
  -- JXP on 16 May 2016

sky_LRISb_400.fits  
  -- Taken from LowRedux (lris_sky_blue_400.sav)
  -- JXP on 16 May 2016

sky_single_mg.dat
  -- List of well vetted sky lines for flexure from Marla Geha
  -- In vacuum
  -- JXP on 6 Apr 2021
