Carl Rolf Brahde (15 March 1918 - 25 May 2009) was a Norwegian astronomer. He fought in the Norwegian Campaign in 1940, and during the subsequent German occupation of Norway he was a member of the clandestine resistance group XU. In 1948, Brahde was hired as observer at the University of Oslo. In this position, he was responsible for the construction of Harestua Solar Observatory north of Oslo. He lectured in celestial mechanics and spherical astronomy, and also researched optics related to astronomical instruments as well as calculating the tidal force and the lunar eclipse. Read more