The building was completed in Fall of 1917 with a 24-foot-diameter steel dome; 30-foot-long I-beams were incorporated to provide support for a future telescope. This differed from the typical masonry pier used to support a telescope in most observatories.
The structure was finished in Autumn of 1917 with a 24-foot-diameter steel dome; 30-foot-long I-beams were included to support a future telescope. This differed from the usual masonry pier used to hold up telescopes in most observatories.