After construction of a new dedicated observatory building, the telescope had a "first light" ceremony on May 30, 2009.

The observatory building was completed by the end of 1884 and the first regular observations were begun on February 1, 1885.

The original observatory building was replaced by the current structure, shown in the photograph above.

The original observatory building was converted into an athletics training facility 1907 and used by the university's football team.

The construction work started in 1876; the main observatory building and its equipment were finished in the autumn of 1879.

They were alone on a specially designed wooden bench beside the observatory building.

The main observatory building has water, a few vending machines, restrooms, and an opportunity to warm up on a cold day.

It has been used to add equatorial tracking to everything from small cameras to entire observatory buildings.

The old observatory building now mainly serves as a museum and is a part of a public science education centre.

The original observatory building in Tucson is used only for public outreach.