The Astronomical Observatories of Jai Singh c2.11

c2.11

| 4. The *Zīj Muḥammad Shāhī* . . . . . | 8 |
| 5. The Jaipur manuscript . . . . . | 8 |
| 6. The British Museum manuscript . . . . . | 10 |
| 7. The preface to the Zīj Muḥammad Shāhī . . . . . . . . . . . | 10 |
|  (i) Introduction . . . . . | 10 |
|  (ii) Jai Singh's reasons for preparing new tables . . . . . . . . . . | 11 |
|  (iii) He approaches the Emperor in the matter . . . . . . . . . . | 11 |
|  (iv) Follows Ulugh Beg and copies the Samarqand instruments . . . . . . . . | 12 |
|  (v) Brass instruments are a failure and he constructed stone instruments at Delhi . . . . | 13 |
|  (vi) Observatories at Jaipur, Ujjain, Mathurā and Benares . . . . . . . . | 13 |
|  (vii) Prepares a new table after seven years of observation . . . . . . . . | 14 |
|  (viii) For this purpose he sent skilful persons to Europe . . . . . . . . | 14 |
|  (ix) Errors in European tables . . . . . | 14 |
|  (x) Perfection of his own observations and tables . . . . . . . . . | 15 |
|  (xi) Conclusion . . . . . | 15 |