He was invited to take a post as translator of Western academic books on the astronomical observatory by the Edo Bakufu (Japanese feudal government headed by a shogun), which was considering a revision of the calendar, and then, as a Dutch book translator, worked on the translation of an encyclopedia originally compiled by Noel Chomel, French scholar.
のちに改暦に悩む江戸幕府からの要請で天文台の蘭書（西洋の学術書）翻訳員として招聘され和蘭書籍和解御用方としてフランスのノエル・ショメールが編纂した百科事典の翻訳に携わった。