Alfonso X, King of Castile and Leon, 1221-1284. Moravus, Augustinus. Santritter, Joannes Lucilius. Canones in Tabulae Alphonsi.
Tabule astronomice Alfonsi Regis.
Venice (Veneto), Johannis Hamman, 1492.
The Alphonsine Tables, prepared for King Alfonso X of Castile in the 13th century, were among the most accurate tables of the positions of the planets ever prepared using the earth-centered approach. This 1492 edition is the oldest book in the Dudley Observatory collection.
Marginal notes, as shown on this pages of tables, are a common feature of early scientific books. The notes can show changing acceptance of scientific ideas and even help historians trace the ownership of individual books.