% Wavelength
lambda   587.56[nm]   Vacuum wavelength

% Lens and filter refractive indices
nref1     1.544       Lens 1, and 4 refractive index (at 587.56[nm])
nref2     1.632       Lens 2, 3 and 5 refractive index (at 587.56[nm])
nref3     1.516       IR filter refractive index (at 587.56[nm])

% Pupil definitions
D_pupil   2.50[mm]    Entrance pupil diameter
N_ring    25          Number of hexapolar rings

% Field definitions
theta1     0[deg]     Field angle 1
theta2     5[deg]     Field angle 2
theta3    10[deg]     Field angle 3
theta4    15[deg]     Field angle 4
dz       -0.5[mm]     Ray release z-coordinate