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Credit & Copyright: Library of Melk Abbey, Frag. 229
Explanation:
Discovered by accident, this manuscript page
provides graphical insight to astronomy in
medieval times, before the
Renaissance and the influence of
Nicolaus Copernicus,
Tycho de Brahe,
Johannes Kepler, and
Galileo.
The intriguing page is from lecture notes
on astronomy compiled by the monk Magister Wolfgang de Styria
before the year 1490.
The top panels clearly illustrate the necessary geometry for a
lunar (left) and solar eclipse in the Earth-centered
Ptolemaic system.
At lower left is a diagram of the Ptolemaic view of the
Solar System
with text at the upper right to explain the movement
of the planets according to
Ptolemy's geocentric
model.
At the lower right is a chart to calculate the
date
of Easter Sunday in the
Julian calendar.
The illustrated manuscript page was found at historic
Melk Abbey in Austria.
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