- Co-operative, Local Astronomy Organizations or Personal Astronomy Homepages
- Research Institutions
- Amateur Researches
- Educational Institutions or Sites
- Space Agencies or Space Centres
- Amateur, Public or Private Observatories 
- Ground-based Telescopes
- Astronomy Magazines





Important notices| Privacy policy





Name

URL

National Solar Observatory (NSO; New Mexico) http://www.nso.edu
Royal Greenwich Observatory (RGO; England) http://www.ast.cam.ac.uk/RGO/
National Optical Astronomy Observatories (NOAO; Arizona) http://www.noao.edu/noao.html
Anglo-Australian Observatory (Epping, Australia) http://www.aao.gov.au/
Gemini 8-meter Telescopes (Hawaii & Chile) http://www.gemini.edu/
Infrared Telescope Facility (IRTF; Hawaii) http://spitzer.caltech.edu/index.shtml
Apache Point Observatory (New Mexico) http://www.apo.nmsu.edu/
European Southern Observatory (ESO; Germany & Chile) http://www.eso.org/
Large Binocular Telescope (LBT; Arizona) http://www.lbto.org
Mauna Kea Observatories (Hawaii) http://www.ifa.hawaii.edu/mko/