Urbain Le Verrier
He then went to Paris in 1854 and worked at the Paris Observatory. There he assisted Urbain Le Verrier in creating a telegraphic meteorological network. He went to Brazil to observe the solar eclipse of September 7, 1858 and ended up staying there for a long time. He became a close acquaintance of the Brazilian Emperor Dom Pedro II, and became the director of the Imperial Observatory at Rio de Janeiro from January to July 1871 and again from 1874 to 1881.