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Astronomical observations at the Maragha observatory in the 1260s-1270s

机译：1260年代-1270S的Maragha天文台的天文观测

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摘要

This paper presents an analysis of the systematic astronomical observations performed by Muhy (1) over bar al-D (i) over barn al-Maghrib (i) over bar (d. 1283 AD) at the Maragha observatory (northwestern Iran, ca. 1260-1320 AD) between 1262 and 1274 AD. In a treatise entitled Talkh (i) over bars al-majist (i) over bar (Compendium of the Almagest), preserved in a unique copy at Leiden, Universiteitsbibliotheek (Or. 110), Muhy (i) over bar al-D (i) over barn explains his observations and measurements of the Sun, the Moon, the superior planets, and eight reference stars. His measurements of the meridian altitudes of the Sun, the superior planets, and the eight bright stars were made using the mural quadrant of the observatory, and the times of their meridian transit using a water clock. The mean absolute error in the meridian altitudes of the Sun is similar to 3.1', of the superior planets similar to 4.6', and of the eight fixed stars similar to 6.2'. The clepsydras used by Muhy (i) over bar al-D (i) over barn could apparently fix time intervals with a precision of +/- 5min. His estimation of the magnitudes of three lunar eclipses observed in Maragha in 1262, 1270, and 1274 AD is in close agreement with modern data.
机译：本文介绍了MARAGHA天文台（D.283 AD）在MARAGHA天文台（伊朗西北部）上的谷仓（1）覆盖BAR AL-D（i）上的系统天文观测1260-1320 AD）在1262和1274之间。在一个题为Talkh（i）的作文中，在酒吧（i）的酒吧（almagest纲要），在莱顿，Universityitsbibliotheek（或110）的独特副本中保留在leiden（110），Muhy（i）上方的Bar Al-D（ i）Over Barn解释了他的观测和测量太阳，月亮，高级行星和八个参考恒星。他对太阳，高级行星和八颗明星的经络海拔的测量是使用天文台的壁画象限，以及他们使用水时钟的经络交通的时间。太阳的子午道中的平均绝对误差类似于3.1'，同样为4.6'，八个固定恒星的八分之一类似于6.2'。 Muhy（i）上方使用的克斯霉（i）在谷仓上方可以明显地修复+/- 5min精度的时间间隔。他在1262,1270和1274年观察到在Maragha中观察到的三个月外食的大小的估计是与现代数据密切一致的。

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