% Wavelengths and field angles
lam1        486[nm]              Wavelength 1
lam2        546[nm]              Wavelength 2
lam3        656[nm]              Wavelength 3
lam_mean    (lam1+lam2+lam3)/3   Mean wavelength
theta_x1    0.000[deg]           Field angle 1, x-component
theta_y1    0.000[deg]           Field angle 1, y-component
theta_x2    0.125[deg]           Field angle 2, x-component
theta_y2    0.000[deg]           Field angle 2, y-component
theta_x3    0.250[deg]           Field angle 3, x-component
theta_y3    0.000[deg]           Field angle 3, y-component

% Entrance pupil etc
N_ring      12                   Number of hexapolar rings
P_nom       203.2[mm]            Nominal entrance pupil diameter
F_nom       10.0                 Nominal focal ratio
f_nom       F_nom*P_nom          Nominal focal length
theta_Airy  1.22*lam_mean/P_nom  Airy disc angular radius
r_Airy      f_nom*theta_Airy     Airy disc radius

% Ray launch parameters
vz   -1                 Ray direction vector, z-component
vx1   tan(theta_x1)     Ray direction vector, x-component
vy1   tan(theta_y1)     Ray direction vector, y-component
vx2   tan(theta_x2)     Ray direction vector, x-component
vy2   tan(theta_y2)     Ray direction vector, y-component
vx3   tan(theta_x3)     Ray direction vector, x-component
vy3   tan(theta_y3)     Ray direction vector, y-component
dz    20[mm]            Ray launch z-coordinate
dx1  -dz*tan(theta_x1)  Ray launch, field 1, x-coordinate
dy1  -dz*tan(theta_y1)  Ray launch, field 1, y-coordinate
dx2  -dz*tan(theta_x2)  Ray launch, field 2, x-coordinate
dy2  -dz*tan(theta_y2)  Ray launch, field 2, y-coordinate
dx3  -dz*tan(theta_x3)  Ray launch, field 3, x-coordinate
dy3  -dz*tan(theta_y3)  Ray launch, field 3, y-coordinate