observatory in Samarkand, Uzbekistan, built in the 1420s
Ulugh Beg Observatory in 2025 A model of Ulugh Beg Observatory in the Uzbek National Museum; the central partition hosted the huge sextant. The trench with the lower section of the meridian arc. In Ulugh Beg's time, these walls were lined with polished marble. It was part of huge sextant. The Ulugh Beg Observatory is an observatory in modern day Samarkand, Uzbekistan, which was built in the 1420s by the Timurid astronomer Ulugh Beg. This school of astronomy was constructed under the Timurid Empire, and was the last of its kind from the Islamic Medieval period. Islamic astronomers who worked at the observatory include Jamshid al-Kashi, Ali Qushji, and Ulugh Beg himself. The observatory was destroyed in 1449 and rediscovered in 1908.
History
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).