Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c12.s2.t77.6

v2.c12.s2.t77.6

It is not that the work in Arabic might have been entirely compiled by Jayasiṃha himself. He had many scholars under his patronage and he might have got it compiled by them. The Siddhānta Samrāt which is for the most part a translation of the Arabic work was compiled by Jagannātha. Nevertheless, Jayasiṃha was himself a good observer, a mathematician and an astronomer. The works mention the fact that some of the subjects were explained by him in quite a new way; and the idea of first taking observations and then compiling a work that would give results in conformity with observations was first originated by him. He had engaged competent artisans and scholars knowing one or both the languages, Sanskrit and Arabic. He had sent astronomers even to foreign lands to take observations. It is obvious that the observation work has to be carried on at several places and by several persons working in co-operation.