!# U filter from Bessel (1990), PASP 102, 1181.
!# See also "U3_BK78.txt".
"UX_B90"
"energy"       
"Vega"    0.
 3000.   0.000
 3050.   0.016
 3100.   0.068
 3150.   0.167
 3200.   0.287
 3250.   0.423
 3300.   0.560
 3350.   0.673
 3400.   0.772
 3450.   0.841
 3500.   0.905
 3550.   0.943
 3600.   0.981
 3650.   0.993
 3700.   1.000
 3750.   0.989
 3800.   0.916
 3850.   0.804
 3900.   0.625
 3950.   0.423
 4000.   0.238
 4050.   0.114
 4100.   0.051
 4150.   0.019
 4200.   0.000  
