Nicolaus Copernicus’ gnomonic array for Sun observation

Jacek P. Szubiakowski

This article presents studies of residues of the specific sundial painted in the wall of the cloister in the northeast part of the castle in Olsztyn. The table was made about 1517, when Nicolaus Copernicus held the office of the administrator of Warmian Chapter properties located around the town. The results following from the mathematical model of that observational instrument are discussed and a novel insight into its functioning and accuracy is provided.

Proceedings of the Polish Astronomical Society, vol. 7, 371-376 (2018)

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