Manuel Dias the Younger

Manuel Dias the Younger (1574 – 4 March 1659)[1] was a Portuguese Jesuit missionary.

His name was sinified as Yang Manuo (陽瑪諾), and he was also referred to by his courtesy name Yanxi (演西).

He introduced the telescope into China just a few years after it had been developed in the Netherlands (1608).

The telescope was first mentioned in his Tian Wen Lüe (Explicatio Sphaerae Coelestis in Latin or Summary of Astronomy in English) in 1615.

[3] In the Tian Wen Lüe he presented the latest European astronomical knowledge in the form of questions and answers.