Mount Laguna Observatory (MLO) is an astronomical observatory owned by San Diego State University (SDSU) and operated in partnership with the University of Illinois at Urbana-Champaign (UIUC). MLO is located approximately 75 kilometers (47 mi) east of downtown San Diego, California (USA) on the eastern edge of the Cleveland National Forest in the Laguna Mountains and near the hamlet of Mount Laguna. MLO was dedicated on June 19, 1968, seven years after SDSU's Department of Astronomy became an independent academic department of SDSU's College of Sciences. Read more