# This is a cubic distortion for the WF3
# taken from the WFPC2 Instrument Handbook
cubic 
-807.068 -2.18757 -8.51284e-3 -3.21458e-7 2.77459e-6
-2.06874e-6 7.39223e-8 -1.18833e-9 7.73056e-8 -3.72971e-10
 
-771.489 7.40319e-3 -2.18554 -1.49841e-6 2.96650e-6
-2.02756e-7 -1.45720e-9 7.72421e-8 8.52633e-10 7.68023e-8