section_path: Science/Astronomy
section_name: Astronomy
paragraph_text: Astronomy
  
  While there appears to have been little concern for theoretical astronomy, Mughal astronomers made advances in observational astronomy and produced some Zij treatises. Humayun built a personal observatory near Delhi. According to Sulaiman Nadvi, Jahangir and Shah Jahan intended to build observatories too but were unable to do so. The astronomical instruments and observational techniques used at the Mughal observatories were mainly derived from Islamic astronomy. In the 17th century, the Mughal Empire saw a synthesis between Islamic and Hindu astronomy, where Islamic observational instruments were combined with Hindu computational techniques.
  
  During the decline of the Mughal Empire, the Hindu king Jai Singh II of Amber continued the work of Mughal astronomy. In the early 18th century, he built several large observatories called Yantra Mandirs, to rival Ulugh Beg 's Samarkand observatory, and to improve on the earlier Hindu computations in the Siddhantas and Islamic observations in Zij-i-Sultani. The instruments he used were influenced by Islamic astronomy, while the computational techniques were derived from Hindu astronomy.