[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Jyotihshastra: Astral and Mathematical Literature](https://indike.org/pramana/ins.science.pingree-1981) › c4.s6.18 # Jyotihshastra: Astral and Mathematical Literature c4.s6.18 Jyotiḥśāstra: Astral and Mathematical Literature c4.s6.18 - **Language:** English ### [c4.s6.18](https://indike.org/pramana/ins.science.pingree-1981.c4.s6.18) Interest in the astrolabe was reawakened in north India in the Mughal period. The Risālat al-uṣṭurlāb of the great thirteenth century Persian polymath, Naṣīr al-Dīn Muḥammad al-Ṭūsī,²⁸⁴ was translated into Sanskrit at some time during this period. In 1615 at Jambūsara in Gujarāt Viśrāma wrote a Yantracintāmaṇi²⁸⁵ in which he describes the astrolabe, the gnomon, the water-clock, the quadrant, and several other instruments. Incidentally, he presents several elements borrowed from Islamic astronomy in addition to the astrolabe: tables of the Sine and Cosine functions at intervals of 1° with R = 120; a declination table with ε = 23;35°; and the goal year periods of the planets.²⁸⁶ - [Previous: c4.s6.17](https://indike.org/pramana/ins.science.pingree-1981.c4.s6.17) - [Next: c4.s6.19](https://indike.org/pramana/ins.science.pingree-1981.c4.s6.19) - [Up: c4.s6](https://indike.org/pramana/ins.science.pingree-1981.c4.s6) ## Linked texts (1) - [Yantracintāmaṇi](https://indike.org/pramana/in.sampradaya.general.kamya.yantracintamani) — Dāmodaramiśra, Sanskrit --- Source: [https://indike.org/pramana/ins.science.pingree-1981.c4.s6.18](https://indike.org/pramana/ins.science.pingree-1981.c4.s6.18) · Pramāṇa