Apache Point Observatory
Consists of 3.5 meter, 2.5 meter, and 1.0 meter with projects, schedules, observing aids, and information for each.
InfraRed Telescope Facility
General information, observing information, instrumentation, facility systems, photo gallery, news, 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.
Sloan Digital Sky Survey
A dedicated 2.5 meter telescope which uses sensitive electronic light detectors to systematically map a quarter of the sky, building a catalog of celestial objects, galaxies, and q…
Spitzer Space Telescope
General information, articles, downloads, equipment information, news, and links.
Tenagra Observatories
Operations, commercial time, facilities and equipment information, sites, discoveries, articles, and links.