CERRO TOLOLO INTER-AMERICAN OBSERVATORY
 INSTRUMENT SECTION
 FILTER TRANSMISSION SCANNER


 FILTER IDENTIFICATION   6520/75
 DATE OF MEASUREMENT     25-JAN-87
 FILTER SIZE             2 X 2 X .244 INCH.
 FOCAL RATIO              13.5 
 TEMPERATURE [C]          22 
 PEAK WAVELENGTH [A]      6528 
 PEAK TRANSMISSION [%]    82.07 
 CENTER WAVELENGTH [A]    6529 
 BANDWIDTH [A]            74 
 COMMENTS:  6520/75 SFI (H ALPHA SET D)


 WAVELENGTH              TRANSMISSION
  6400                    .0837989 
  6402                    .0566733 
  6404                    .113928 
  6406                    .114416 
  6408                    .115507 
  6410                    .0904977 
  6412                    .118977 
  6414                    .120084 
  6416                    .1207 
  6418                    .121322 
  6420                    .122511 
  6422                    .191693 
  6424                    .189155 
  6426                    .188679 
  6428                    .15758 
  6430                    .194742 
  6432                    .261267 
  6434                    .262985 
  6436                    .363396 
  6438                    .402414 
  6440                    .454864 
  6442                    .476191 
  6444                    .594613 
  6446                    .72098 
  6448                    .851536 
  6450                    .861141 
  6452                    1.04908 
  6454                    1.16498 
  6456                    1.28928 
  6458                    1.53846 
  6460                    1.82112 
  6462                    2.11382 
  6464                    2.55249 
  6466                    3.05951 
  6468                    3.72541 
  6470                    4.51064 
  6472                    5.49638 
  6474                    6.87876 
  6476                    8.41648 
  6478                    10.5543 
  6480                    13.4903 
  6482                    16.4045 
  6484                    20.7738 
  6486                    25.4292 
  6488                    31.5863 
  6490                    37.8957 
  6492                    45.4417 
  6494                    52.7091 
  6496                    60.0289 
  6498                    64.5255 
  6500                    71.4928 
  6502                    74.4606 
  6504                    77.5407 
  6506                    79.2094 
  6508                    80.0924 
  6510                    81.348 
  6512                    81.5595 
  6514                    82.6709 
  6516                    81.765 
  6518                    81.94 
  6520                    82.3337 
  6522                    82.9079 
  6524                    82.2616 
  6526                    82.2671 
  6528                    82.0701 
  6530                    82.4101 
  6532                    81.9453 
  6534                    82.304 
  6536                    82.0743 
  6538                    81.6203 
  6540                    81.1736 
  6542                    82.284 
  6544                    81.6035 
  6546                    80.9227 
  6548                    80.7252 
  6550                    80.3215 
  6552                    80.1696 
  6554                    76.524 
  6556                    73.8127 
  6558                    69.7473 
  6560                    65.0602 
  6562                    58.2544 
  6564                    51.4325 
  6566                    43.2209 
  6568                    36.6343 
  6570                    29.9644 
  6572                    24.7126 
  6574                    19.5779 
  6576                    16.2704 
  6578                    12.5749 
  6580                    10.3343 
  6582                    8.26748 
  6584                    6.89013 
  6586                    5.5873 
  6588                    4.29836 
  6590                    3.76135 
  6592                    3.19843 
  6594                    2.70985 
  6596                    2.44386 
  6598                    2.00401 
  6600                    1.77596 
  6602                    1.59501 
  6604                    1.51515 
  6606                    1.1955 
  6608                    1.06232 
  6610                    .999286 
  6612                    .869565 
  6614                    .803506 
  6616                    .740741 
  6618                    .903614 
  6620                    .610687 


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