'' in 1921 The 8.25 inch refractor housed in the observatory's copper dome was purchased from
Warner & Swasey (with optics produced by
John Brashear), and delivered to the university in 1894. Initially the telescope was housed in a dome atop the Science Hall on the university campus. This location was soon found to have been a poor choice; nearby trees and buildings obscured the horizon, and the vibrations produced by passing streetcars disturbed observations. In the early 20th century a search was begun for a more suitable location to house the telescope, and a site on the Waveland Golf Course (nearly two miles west of the university campus) was chosen. The city of Des Moines agreed to provide the site (0.23 acres) and maintain the exterior of the building if Drake University would supply and maintain the observatory instruments, maintain the building interior, and offer public programs. The observatory building was constructed from
Indiana limestone during the years 1920–1921, and was dedicated on November 5, 1921. At the time of its opening, the observatory housed a meridian
transit telescope which was used to provide official time for the city of Des Moines (in addition to the main telescope in the dome). The observatory building was designed by Des Moines architect
Frank E. Wetherell. The cost of building's construction was approximately $200,000 . == Features ==