STARTING PRESCRIPTION FOR SCHMIDT CASSEGRAIN :)S4MoG
Surf Radius Thickness Glass x{w ?X.Nt
OBJ Infinity Infinity =<tEc+!T3
STO Infinity 1.000000 Bk7 Hw3E S
2 Infinity 60.000000 x=<>%m5R
3 -60.000000 -30.000000 MIRROR O-m}P
IMA Infinity 3m9E2R,
Now perform a layout plot to verify everything is correct. The standard 2D layout will work fine. You should see a plot like Figure E4-1.