!# $H$ filter from Bessel & Brett (1988), PASP 100, 1134.
"H"
"energy"       
"Vega"    0.
14800.   0.000
15000.   0.444
15200.   0.869
15400.   0.949
15600.   0.990
15800.   0.960
16000.   1.000
16200.   1.000
16400.   1.000
16600.   1.000
16800.   1.000
17000.   1.000
17200.   0.960
17400.   0.879
17600.   0.848
17800.   0.717
18000.   0.525
18200.   0.020
18400.   0.000
