Pupil Phase Screen
The PupilPhaseScreen is used to calculate star-test images. The values show the sum of aberrations for all positions used to simulate a telescope. In the previous Aberrator these were grey-shaded, later became colour-full and now they can also be seen in 3d. You can turn the images around to inspect the exact shapes of the aberrations. The image below shows 1 wave of coma-error.