IHW_IRFTAB
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 o See if we can get filter set information (where from?) for:
     Kuiper 
     Cerro Tololo IO 8-channel IR spectrometer
   to add to filter table.

 o Remove IHW 3650, 4845 and 6840 filters from filter table.

 o Get observatory names (from filter curve dataset) into the third column
   of the filter table data set.  Also looks like the last column is wrong.

 o In filter curves filter.tab file, widen the filter code column to hold
   the full designation from the filter table and add center wavelength.

 o Filter tables 31-33 unit is nanometers.

 o Check COLUMN_NAMEs against FITS descriptions throughout and correct.

 o Also check to make sure wavelength is given in reasonable units (nm or 
   Angstroms) for the values that appear in the file.  (Tables 31-33)

 o Chase down "in press" references and update.

 o Tables 34-46: Wavelength unit is wrong (should be cm*-1 rather than
   microns).

 o Look for email from Mike Sitko with specific small corrections.