I recommend very highly, Owen Gingerich's two books:
The Great Copernicus Chase, Sky Publishing, 1992
The Eye of Heaven, American Institute of Physics, 1993
The standard biographies of Brahe and Keplar are:
Thoren, Victor E., The Lord of Uraniborg, Cambridge, 1990.
Caspar, Max, Kepler, Abelard-Cushman, 1959. Also available in Dover paperback
A new biography of Brahe is much more available:
Christianson, John, On Tycho's Island, Cambridge 2000
A good general reference from ancient times to the present:
Hetherington, Norris R, (Editor), Encyclopedia of Cosmology, Garland 1993.
Animations for this lecture:
Ptolemy's model for Mars
Ptolemy's model for Mercury
This is a superb History of Astronomy link from Cambridge University:
Some links for this lecture:
Lecture 3 is scheduled for March 21 at 7 P.M.
Please contact me with any questions.