Hubble Space Telescope
Discovery Hubble, How Hubble Space Telescope Works, Hubble, Hubble - Ultra Deep Field, Hubble Hits, Hubble Project, Hubble Space Telescope, HubbleLocation, HubbleSite, The Advanced Camera for Surveys
International Facilities
Anglo-Australian Observatory, Bradford Robotic Telescope, Brera Astronomical Observatory, Canada France Hawaii Telescope Corporation, Centro Astronómico Hispano Alemán, Cerro Tololo Inter-American Observatory, Dominion Astrophysical Observatory, El Observatorio Astrofísico Guillermo Haro, European Southern Observatory, Gemini Observatory
Large Telescopes
Anglo-Australian Observatory, Caltech Astronomy, Centro Astronómico Hispano Alemán, Gemini Observatory, Large Binocular Telescope Observatory, Multiple Mirror Telescope Observatory, Paranal Observatory, Subaru Telescope, W. M. Keck Observatory
Apache Point Observatory
Consists of 3.5 meter, 2.5 meter, and 1.0 meter with projects, schedules, observing aids, and information for each.
Berkeley Automated Imaging Telescopes
Information for the Leuschner Berkeley and the Katzman automatic imaging equipment.
Cambridge Optical Aperture Synthesis Telescope
A multi-element optical interferometer with baselines of up to 100 meters, designed to observe stars with angular resolution as high as one thousandth of one arcsecond.
Carnegie Observatories
Information for observers, calendar, publications and libraries, seminars and conferences, fellowship program, and links.
InfraRed Telescope Facility
General information, observing information, instrumentation, facility systems, photo gallery, news, and links.
Keck Interferometer
A ground-based component of NASA's Origins Program that addresses fundamental questions about the formation of galaxies, stars, and planetary systems, the prevalence of planetary systems around other stars, and the formation of life on Earth.
Kitt Peak National Observatory
General information, image gallery, facility schedule, documentation, observation information, documentation, and electronic forms and tools.
Lowell Observatory
Research, education and outreach, mission, star tales, and links.
McDonald Observatory
Facility information, equipment and instrumentation, observer information, and research.
Mount Laguna Observatory
Facilities, equipment and instrumentation information, virtual tour, site map, CCD camera laboratory and production, and resources.
Mount Wilson Observatory
Projects, outreach and education, history, FAQ, news, and links.
National Optical Astronomy Observatories
Information, news, resources, outreach programs, gallery, observing information, software, and newsletter and reports.
Sloan Digital Sky Survey
Data links, questions and answers, image gallery, project tour, news, archive, publications, and links.
Spitzer Space Telescope
General information, articles, downloads, equipment information, news, and links.
Steward Observatory
Equipment information, projects, calendar, talks, news, and links.
Stratospheric Observatory For Infrared Astronomy
News and updates, education and public outreach, research information, and galleries.
Tenagra Observatories
Operations, commercial time, facilities and equipment information, sites, discoveries, articles, and links.
The Advanced Satellite for Cosmology and Astrophys
Mission characteristics, science highlight, and archive.