Since its founding in 1891, many people have passed through the doors of the Vatican Observatory. A quick perusal of our guestbook reveals several Names, including Popes, nobel laureates, astronauts, actors, and saints.
Today's guestbook entry is from March 25, 1913, when Jens F. Schroeter made a visit.
Jens Schroeter (1857-1927) [Source: Oslo Museum]
Next to his name, Jens Fredrick Wilhelm Schroeter (1857-1927) wrote, "Observator an der Sternwarte in Kristiania" ("Observator at the observatory in Kristiania.") He was an astronomer of the Observatory of Royal Frederick University in Oslo, Norway. He would become the director of the observatory in 1919. [n.b. "Kristiania" was the official name of Oslo from 1877-1925.]
Schroeter also edited the Nordic Astronomical Journal.