720 XTF Search Results (expand=subject;f1-subject=Observatory (ground-based));f1-subject%3DObservatory%20(ground-based) Results for your query: expand=subject;f1-subject=Observatory (ground-based) Thu, 01 Jan 1970 12:00:00 GMT GRB Coordinates Network. Schematic of the GRB Coordinates Network (GCN), a system that distributes information about the location of a gamma-ray burst (GRB). The spacecraft sends the GRB location information down to a ground station, which in turn relays it to the GCN at the NASA Goddard Space Flight Center. Thu, 01 Jan 1970 12:00:00 GMT Keck Mirror Assembly. The twin Keck telescopes are located on Mauna Kea, a dormant volcano in Hawaii. The telescopes are the largest optical and infrared telescopes in the world with segmented mirrors that are made up of 36 hexagonal shaped mirrors each. Each 10-inch telescope stands eight stories tall and weighs 300 tons. Thu, 01 Jan 1970 12:00:00 GMT The VERITAS Array. VERITAS (Very Energetic Radiation Imaging Telescope Array System) is a system of four ground-based telescopes focused on gamma-ray science. Since gamma-rays cannot penetrate the atmosphere, the telescopes are detecting the particles created when gamma-ray photons collide with the atmosphere. Optical telescopes can then image the display the secondary particles make when passing through the atmosphere. Thu, 01 Jan 1970 12:00:00 GMT McDonald Observatory. The McDonald telescopes are located atop Mount Fowlkes (in the far background) and Mount Locke (in the foreground) in the Davis Mountains of West Texas. The telescopes are used by faculty and students in the University of Texas at Austin’s Astronomy department to study black holes and dark energy among other astronomical phenomena and mysteries. Thu, 01 Jan 1970 12:00:00 GMT Yerkes Observatory. The 40-inch refracting telescope at the Yerkes Observatory of the University of Chicago. Thu, 01 Jan 1970 12:00:00 GMT