The Astronomical Observatories of Jai Singh c5.1

c5.1

4. The *Zīj Muḥammad Shāhī* is a set of astronomical tables prepared under the direction of Jai Singh and named after the Emperor, Muḥammad Shāh.¹ Of this work, I found (A) an incomplete Devanāgarī manuscript at Jaipur, and (B) a complete Persian manuscript at the British museum. At first, B was supposed to be an original work, while A was said to be, not the *Zīj Muḥammad Shāhī* itself but *Ulugh Beg's* celebrated catalogue brought up to date by Jai Singh and his assistants.