Based on the Ptolemaic theory, they assumed that the earth was at the center of the universe and they enabled astronomers to calculate three positions of the planets at any given moment.
First printed in 1483, they were an important source of information for his early works but his own work made them obsolete in the 1550s. Based on the Ptolemaic theory, they assumed that the earth was at the center of the universe and they enabled astronomers to calculate three positions of the planets at any given moment. FTP identify these astronomical catalogues named after the king of Leon and Castille.
First printed in 1483, they were an important source of information for his early works but his own work made them obsolete in the 1550s.
Alfonsine Tables