which he published in 1609 and 1619. Emperor Rudolf died in 1612 and Kepler left Prague.

Composition and publication

The tables were anticipated for many years, with pleas for its publication reaching as far as India and Jesuit missionaries in China. Apart from external hindrances, Kepler himself refrained from such a monumental enterprise involving endless tedious calculations. He wrote in a letter to a Venetian correspondent, impatiently inquiring

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