
Chapter 8
Catadioptric Telescopes and Cameras
In this chapter we discuss various derivatives of the Schmidt type of telescope,
including Schmidt-Cassegrain, Baker-Schmidt, and Bouwers-Maksutov systems.
Each of these is a type of catadioptric telescope in which a fiill-aperture
refracting element provides the aberration correction needed to get good imagery
over a wide field. Given this definition, the classical Schmidt telescope is also of
this type.
The Schmidt-Cassegrain, as the name suggests, is a two-mirror system with an
aspheric corrector in the collimated beam ahead of the primary mirror. Baker-
Schmidt systems are a subclass of the Schmidt-Cassegrai ...