Jean Focas

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Jean-Henri Focas (July 20, 1909 – January 3, 1969) was a Greco-French astronomer. In Greek he was known as Ionnas Focas.

He worked at the Pic du Midi Observatory, investigating the surface features of Mars using visual and photographic techniques.

Focas crater on the Moon and Focas crater on Mars were named for him.

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