Francesco Fontana
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Francesco Fontana (1585 or 1602 – 1656) was an Italian lawyer and astronomer.
He created woodcuts showing the Moon and the planets as he saw them through a self-constructed telescope. In 1646 he published most of them in the book Novae coelestium terrestriumq[ue] rerum observationes, et fortasse hactenus non vulgatae. In 1645, he claimed have observed a satellite of Venus (Paul Stroobant demonstrated in 1887 that all similar observations were not related to a putative satellite of venus)
A crater on Mars was named in his honor.