# Units: # "lambda" is in Angstroms # "pass" is the contribution to the detector signal per photon # entering the atmosphere of Earth # # Bandpass Name(s): U # # 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 3000.0 0 KFILTER 3050.0 0.0262295081967213 KFILTER 3100.0 0.109677419354839 KFILTER 3150.0 0.265079365079365 KFILTER 3200.0 0.4484375 KFILTER 3250.0 0.650769230769231 KFILTER 3300.0 0.848484848484849 KFILTER 3350.0 1.0044776119403 KFILTER 3400.0 1.13529411764706 KFILTER 3450.0 1.21884057971014 KFILTER 3500.0 1.29285714285714 KFILTER 3550.0 1.32816901408451 KFILTER 3600.0 1.3625 KFILTER 3650.0 1.36027397260274 KFILTER 3700.0 1.35135135135135 KFILTER 3750.0 1.31866666666667 KFILTER 3800.0 1.20526315789474 KFILTER 3850.0 1.04415584415584 KFILTER 3900.0 0.801282051282051 KFILTER 3950.0 0.535443037974684 KFILTER 4000.0 0.2975 KFILTER 4050.0 0.140740740740741 KFILTER 4100.0 0.0621951219512195 KFILTER 4150.0 0.0228915662650602 KFILTER 4200.0 0