old_contents: #
  # HSC_cfg.py -- HSC configuration information
  #
  #  Russell Kackley (rkackley@naoj.org)
  #
  
  # Complete list of all HSC filters
  all_filters =  [f.upper() for f in ('g', 'r', 'r2', 'i', 'i2', 'z', 'Y', 'NB387', 'NB400', 'NB430', 'NB468', 'NB515', 'NB527', 'NB656', 'NB718', 'NB816', 'NB921', 'NB926', 'IB945', 'NB973', 'NB1010')]
  
  # List of filters available for each semester
  semester_filters = {
      'S16A': [f.upper() for f in ('g', 'r', 'i', 'z', 'Y', 'NB921', 'NB816', 'NB515', 'NB468', 'NB527', 'NB656')],
      'S16B': [f.upper() for f in ('g', 'r', 'i', 'i2', 'z', 'Y', 'NB387', 'NB515', 'NB527', 'NB816', 'NB921')],
      'S17A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB387', 'NB527', 'NB656', 'NB718', 'NB816', 'NB921', 'NB926')],
      'S17B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB387', 'NB527', 'NB816', 'NB926')],
      'S18A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB101', 'NB816')],
      'S18B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB387', 'NB468', 'NB527', 'NB816', 'NB921', 'NB1010')],
      'S19A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB387', 'NB527', 'NB816', 'NB921')],
      'S19B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB400', 'NB468', 'NB515', 'NB816', 'NB926')],
      'S20A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB400', 'NB816', 'NB921', 'NB926')],
      'S20B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB430', 'NB497', 'NB816')],
      }
  
new_contents: #
  # HSC_cfg.py -- HSC configuration information
  #
  #  Russell Kackley (rkackley@naoj.org)
  #
  
  # Complete list of all HSC filters
  all_filters =  [f.upper() for f in ('g', 'r', 'r2', 'i', 'i2', 'z', 'Y', 'NB387', 'NB400', 'NB430', 'NB468', 'NB497', 'NB515', 'NB527', 'NB656', 'NB718', 'NB816', 'NB921', 'NB926', 'IB945', 'NB973', 'NB1010')]
  
  # List of filters available for each semester
  semester_filters = {
      'S16A': [f.upper() for f in ('g', 'r', 'i', 'z', 'Y', 'NB921', 'NB816', 'NB515', 'NB468', 'NB527', 'NB656')],
      'S16B': [f.upper() for f in ('g', 'r', 'i', 'i2', 'z', 'Y', 'NB387', 'NB515', 'NB527', 'NB816', 'NB921')],
      'S17A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB387', 'NB527', 'NB656', 'NB718', 'NB816', 'NB921', 'NB926')],
      'S17B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB387', 'NB527', 'NB816', 'NB926')],
      'S18A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB101', 'NB816')],
      'S18B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB387', 'NB468', 'NB527', 'NB816', 'NB921', 'NB1010')],
      'S19A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'IB945', 'NB387', 'NB527', 'NB816', 'NB921')],
      'S19B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB400', 'NB468', 'NB515', 'NB816', 'NB926')],
      'S20A': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB400', 'NB816', 'NB921', 'NB926')],
      'S20B': [f.upper() for f in ('g', 'r2', 'i2', 'z', 'Y', 'NB430', 'NB497', 'NB816')],
      }
  
subject: Add NB497 filter to all_filters list