Bellatrix Astronomical Observatory: General and equipment information, and images.
Cold Spring Observatory: Biography and research interests, construction and equipment photos, links, and image galleries.
Concord Grove Observatory: About the facility, current sky conditions, images, and links.
Custer Institute: Resources, events, newsletters, and directions.
Foothill Observatory: Courses, news, sites, facility information, viewing times, and map.
Goldendale Observatory State Park: History, directions, programs, volunteers, and links.
Hlohovec Observatory and Planetarium: History, location, news, programs, public observations, seminars, and links.
Hyde Memorial Observatory: Information, directions, resources, programs, and links.
Lake Afton Public Observatory: Information, programs, calendar, brochure, flyer, and links.
Linden Observatory: News, open nights, visitors, work, history, and virtual tour.
Maria Mitchell Association - Astronomy Department: General information on associated facilities.
Martz Observatory: Information, directions, schedule, about the group, news articles, and links.
Our Astronomy Education Center: Information, the project, and a work in progress photo album.
Perkins Observatory: History, programs, staff, volunteering, solar viewing, events, educational materials, Macintosh software, directions, and links.
Pine Mountain Observatory: Facility and visitor information, projects, CCD images, MPEGs, and links.
Rainwater Observatory and Planetarium: Information, programs and services, association information, star gaze information, and links.
Robert Ferguson Observatory: Programs, events, education, classes, space science, images, downloads, and links.
The Pacific Observatory: About the facility, history, events, music, gallery, shows, courses, and calendar.
The SSU Observatory: About the facility, public viewing nights, educational projects, directions, and observatory reports.
University of London Observatory: Student and public information, tours, equipment, images, library, observing information, news, and links.
Urania Public Observatory: General information with a scientific television guide.