GUIDO HORN D'ARTURO (Trieste, 1880-1967)
Graduated in astronomy in Wien and was director of Bologna Observatory since
1920. Besides his scientific activity (among other achievements, the
construction of the
specchio a tasselli, progenitor of the multiple mirror
telescopes) particularly relevant were his efforts to give the library a modern
organization, providing a card catalogue and a subject classification, and
giving the archives their present organization, both chronological and by
subjects. He also contributed to the diffusion of amateur astronomy with his
"Piccola enciclopedia astronomica" (together with Piero Tempesti) and founding
the journal COELUM, (1931-1986).
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