2.Use the RSI ray for the upper marginal ray for field 2 to determine the obscurations
X9;51JV on surfaces 2 and 3 (Hint: look at the ray height on S5). These obscurations make a
PLRMW 2 hole in the corrector to prevent the light from passing through the corrector lens
fT.M glJcb twice.
!7Nz_d~n a([8r- zP 3. Use a targeted ray for the negative full field to hit the edge of the obscuration on
B!((N{4H+ surface 2 to determine the size of the obscuration on surface 1. This obscuration
T9b Ut
