
174 7. Schmidt Telescopes and Cameras
Table 7.2
Fifth-Order Spherical Aberration Results'^
Surface
Aspheric
Spherical
mirror
^5
b'
16
^Results valid for coUimated
ASA5 = 655r^
ASA5
light only.
7.2.C. FIFTH-ORDER SPHERICAL ABERRATION
The prescription of a Schmidt corrector plate usually includes higher-order
aberration terms. Fifth-order spherical aberration is the most significant of these
terms and we give here, without derivation, the necessary relations for a spherical
mirror and aspheric corrector in collimated light.
The fifth-order spherical aberration coefficients, denoted by B^, are obtained
after a lengthy analysis paralleling tha