William of Saint-Cloud

William of Saint-Cloud is a French astronomer in the late thirteenth century. He is known for his Almanac prepared around 1292, dedicated to Marie of Brabant, and translated for Joan of Navarre. This almanac, one of the rare witness of astronomical observations at the end of the High Middle Ages, contains ephemeris of the sun, moon and planets and advocates also the use of the camera obscura to observe solar eclipses.

References

This article is issued from Wikipedia - version of the Thursday, June 11, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.