# Units: # "lambda" is in Angstroms # "pass" is the contribution to the detector signal per photon # entering the atmosphere of Earth # # Bandpass Name(s): I # # Instrument: Hypothetical system developed to match known "standards" # of Johnson/Cousins to spectrophotometry # # Determined by: M. S. Bessell # # Date of determination: 1990 # # Meaning of/Reason for default column: Only available # # Notes: # # These filter curves define the "official" Johnson/Cousins BVRI # system, as far # as I am concerned. One must take care to make sure # that you really want these filters; ie. that the observations have # been converted into this system. Otherwise, you will have to use # custom filter curves (which may not be a bad idea). # # Details of how/why this system is defined can be found in: # # Bessell, M.S. 1990, PASP, 102, 1181 # # Read it; it will give you a good insight into how complex this # whole business really is. # # Michael Blanton # 2002-08-19 # typedef struct { double lambda; double pass; } KFILTER; KFILTER 7000. 0 KFILTER 7100. 0.0169014084507042 KFILTER 7200. 0.161111111111111 KFILTER 7300. 0.38013698630137 KFILTER 7400. 0.530405405405405 KFILTER 7500. 0.606666666666667 KFILTER 7600. 0.634868421052632 KFILTER 7700. 0.63961038961039 KFILTER 7800. 0.634615384615385 KFILTER 7900. 0.629746835443038 KFILTER 8000. 0.625 KFILTER 8100. 0.617283950617284 KFILTER 8200. 0.603658536585366 KFILTER 8300. 0.590361445783133 KFILTER 8400. 0.56547619047619 KFILTER 8500. 0.535294117647059 KFILTER 8600. 0.5 KFILTER 8700. 0.431034482758621 KFILTER 8800. 0.318181818181818 KFILTER 8900. 0.185393258426966 KFILTER 9000. 0.0833333333333333 KFILTER 9100. 0.0164835164835165 KFILTER 9200. 0