# ABJOHNSON -- AB zeropoint for conversion from Johnson magnitudes.
# Taken from CTIO exposure time calculator code.  Source unknown.

 3300  1.200
 3390  1.178
 3448  1.164
 3509  1.148
 3571  1.122
 3636  1.092
 4036 -0.270
 4167 -0.237
 4225 -0.222
 4464 -0.179
 4566 -0.139
 4785 -0.096
 5000 -0.060
 5264 -0.011
 5556  0.037
 5840  0.092
 6058  0.145
 6440  0.208
 6792  0.261
 7102  0.320
 7554  0.369
 7782  0.434
 8092  0.471
 8376  0.525
 8712  0.512
 9834  0.603
10256  0.618
10406  0.637
