MOUNT WILSON OBSERVATORY
Mount Wilson Observatory is located in southern California, at an elevation of 1742 meters. Its proximity to Los Angeles does in part limit the kinds of nighttime research that can be done. The sky brightness at the observatory from Los Angeles is approximately equal to the sky brightness from the Full Moon. Therefore, every month, every observatory has a similar problem. However, observations of point sources such as stars and star clusters, nearby galazies and brighter solar system objects are feasible. In addition, the sky brightness does not affect observations of the Sun at the solar towers.