Song_I-yeong
Song I-yeong
Korean astronomer (fl. 17th century)
Song I-yeong (Korean: 송이영; Hanja: 宋以潁; MR: Song Iyŏng,[2] 1619–?) was a Korean court astronomer of the Joseon dynasty. He invented a weight-powered astronomical clock (possibly the Honcheonsigye) and contributed greatly to the implementation of the Shixian Calendar (from Qing China) in Joseon. He also made systematic observations of two comets.[1]