Consider two identical Cassegrain telescope mirrors. One is set up as a prime focus telescope, whereas the other is used in a Cassegrain telescope. a. Sketch both telescopes. b. What are the...

Consider two identical Cassegrain telescope mirrors. One is set up as a prime focus telescope, whereas the other is used in a Cassegrain telescope. a. Sketch both telescopes. b. What are the differences between the two that make each useful in different observing situations?