German astronomer Simon Marius, depicted with the tools of his research, including a perspicillum, o
German astronomer Simon Marius, depicted with the tools of his research, including a perspicillum, or telescope.Marius, Simon, 1573-1624. Mundus Iovialis, 1614.*GC6 M4552 614m Houghton Library, Harvard University -- source link
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