Selections from Kepler's Astronomia Nova (Science Classics Module for Humanities Studies)
The translation is quite readable ... Donahue prudently allows Kepler 'the courtesy of supposing that what he writes can be understood' [in Donahue's words], and has managed a translation that preserves a good bit of the style of the Latin: sometimes elevated, frequently jocular, on occasion impassioned. The English almost always seems faithful in tone to the original --Bruce Stephenson, Isis