NGAO_BKG data file: Optical materials
ID           VTRAN    IRTRAN   FILENAME                 SK WUNIT   FUNIT
    INFRASIL 1.00E-05 1.00E-03                          00 0.0E+00 0.0E+00
        CAF2 1.00E-04 1.00E-02                          00 0.0E+00 0.0E+00
    SAPPHIRE 3.00E-03 3.00E-01                          00 0.0E+00 0.0E+00
    ADCGLASS 1.00E-02 1.00E-02                          00 0.0E+00 0.0E+00
      VIS_AR 5.00E-03 4.00E-02                          00 0.0E+00 0.0E+00
      NIR_AR 4.00E-02 5.00E-03                          00 0.0E+00 0.0E+00
      OPT_AR 1.00E-02 1.00E-02                          00 0.0E+00 0.0E+00
    ALUMINUM 9.30E-01 9.50E-01           refl_fs72h.dat 02 1.0E-06 1.0E-02
    ENH_ALUM 9.60E-01 9.60E-01              refl_al.dat 02 1.0E-06 1.0E-02
   PROSILVER 9.50E-01 9.80E-01       refl_fss99-106.dat 02 1.0E-06 1.0E-02
        GOLD 7.50E-01 9.90E-01           refl_fsg98.dat 02 1.0E-06 1.0E-02
   NA_DICH_T 1.00E-01 2.00E-02                          00 0.0E+00 0.0E+00
   NA_DICH_R 1.00E-01 2.00E-02                          00 0.0E+00 0.0E+00
   IR_DICH_T 1.00E-02 9.50E-01      tran_palao_ird2.dat 02 1.0E-09 1.0E-02
   IR_DICH_R 1.00E-02 9.50E-01      tran_palao_ird2.dat 02 1.0E-09 1.0E-02