Wilhelm IV的星表
The star catalogue of Wilhelm IV, Landgraf von Hessen-Kassel
摘要：
在16世纪末，威廉四世建立了一个天文台，主要目的是提高恒星位置的准确性，主要用于占星术和日历目的。一个新的星表是根据测量的高度和恒星之间的角度编制的，并准备了一个可打印的版本，列出了测量结果以及恒星位置的赤道和黄道坐标。不幸的是，这份目录在1666年之前没有出版，早在布拉赫目录传播之后。利用手稿中给出的数据，我们能够分析测量和计算的准确性。测量和计算非常准确，这要归功于仪器制造商和数学家Jost Bürgi。该星表比第谷·布拉赫后来的星表准确两倍。
英文摘要：
Near the end of the 16th century Wilhelm IV, Landgraf von Hessen-Kassel, set up an observatory with the main goal to increase the accuracy of stellar positions primarily for use in astrology and for calendar purposes. A new star catalogue was compiled from measurements of altitudes and angles between stars and a print ready version was prepared listing measurements as well as equatorial and ecliptic coordinates of stellar positions. Unfortunately, this catalogue appeared in print not before 1666, long after the dissemination of Brahe's catalogue. With the data given in the manuscript we are able to analyze the accuracy of measurements and computations. The measurements and the computations are very accurate, thanks to the instrument maker and mathematician Jost Bürgi. The star catalogue is more accurate by a factor two than the later catalogue of Tycho Brahe.
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