!# B filter from Bessel (1990), PASP 102, 1181.
!# To use in U-B only.
!# See also "B2_BK78.txt".
"BX_B90"
"energy"       
"Vega"    0.
 3600.   0.000
 3700.   0.026
 3800.   0.120
 3900.   0.523
 4000.   0.875
 4100.   0.956
 4200.   1.000
 4300.   0.998
 4400.   0.972
 4500.   0.901
 4600.   0.793
 4700.   0.694
 4800.   0.587
 4900.   0.470
 5000.   0.362
 5100.   0.263
 5200.   0.169
 5300.   0.107
 5400.   0.049
 5500.   0.010
 5600.   0.000
