Observatories
- 101
- Leiden Observatory
- General information, research, events, facility information, education, news, and links.
- 102
- Nordic Optical Telescope
- General information, equipment and instruments, observer information, resources, and education and outreach.
- 103
- South African Astronomical Observatory
- General information, news, research information, observing and facilities information, education, images, calendars, and links.
- 104
- The Antarctic Infrared Observatory
- Operation of 1.8 meter for wide-field imaging, queue observing, and standardized data processing, and includes overview, facility information, and team.
- 105
- Caltech Astronomy
- Facilities include 200 inch, 60 inch, 48 inch, 18 inch, and the Snoop, and provides, general and visitor information, history, images, news, and research results.
- 106
- Centro Astronómico Hispano Alemán
- The German-Spanish Astronomical Center at Calar Alto, Spain includes location, visitor information, equipment description, newsletter, and news operated by the Max Planck Institute for Astronomy.
- 107
- McDonald Observatory
- Facility information, equipment and instrumentation, observer information, and research. They have a 9.2 meter telescope as well as smaller ones.
- 108
- Southern African Large Telescope
- Information on facility and equipment, news, science, observing, and inauguration.
- 109
- Subaru Telescope
- Is 8.2 meters, and includes general information, equipment and instrument information, presentations, and images.
- 110
- The MMT Observatory
- Is 6.5 meters in diameter and provides historical information, public access information, and visual resources.
- 111
- W. M. Keck Observatory
- Comprised of two 10 meter telescopes includes information on equipment and instruments, with images and movies, observing information, and news.