Ulugh Beg: The ruler who reached for the stars

[denel]

Well worth reading. Most people dont even know Ulugh Beg (grandson of Timurlane) and what his contribution to field of Astronomy were.

https://arxiv.org/ftp/arxiv/papers/1804/1804.08352.pdf

The Tragic Story Of The Man Who Unlocked The Universe

Samarkand, Uzbekistan on the old Silk Road trading route from China to the Mediterranean was the setting for one of astronomy's greatest achievements. So why is it now virtually forgotten?

www.forbes.com

Ulugh Beg observatory. Samarkand. Uzbekistan. Tours in Samarkand. Tours in Uzbekistan. Travel to Uzbekistan. Holidays in Uzbekistan

A gigantic arc for measuring angles, 63 m long and with a radius of 40.212 m, and an enormous sextant oriented very accurately along the meridian, from south to north, formed the main measuring instrument of the observatory. Its accurateness was confirmed

centralasia-adventures.com