Lowell Observatory comparing these measurements with a reference set of Sun-like stars. Lowell Observatory is building a major new reflecting telescope in partnership with Discovery Communications, located near Happy Jack, Arizona. This Discovery Channel Telescope (DCT), located within the Mogollon Rim Ranger District of the Coconino National Forest, is expected to be the fifth-largest telescope in the contiguous United States, and it will enable the astronomers of Lowell Observatory to enter new research areas deeper into outer space. The DCT and the research carried out there will be the focus of ongoing informative and educational television programs about astronomy, the sciences, and
Heidelberg-Königstuhl State Observatory in 1906. The observatory ceased to be run by the German federal government in 2005 when it was joined with the Institute of Theoretical Astrophysics and Astronomical Calculation Institute to make up the Center of Astronomy of the University of Heidelberg. Between 1912 and 1957 Karl Wilhelm Reinmuth discovered almost 400 asteroids from the Heidelberg-Königstuhl State Observatory. Heidelberg-Königstuhl State Observatory Heidelberg-Königstuhl State Observatory () is a historic astronomical observatory located near the summit of the Königstuhl hill in the city of Heidelberg in Germany. The predecessor of the current observatory was originally opened in 1774 in the nearby city of