| Name |
URL |
| National Solar Observatory (NSO; New Mexico) |
https://www.nso.edu |
| Royal Greenwich Observatory (RGO; England) |
https://www.rmg.co.uk/observatory/greenwich |
| National Optical Astronomy Observatories (NOAO; Arizona) |
https://www.noao.edu/ |
| Anglo-Australian Observatory (Epping, Australia) |
https://astralis.org.au/ |
| Gemini 8-meter Telescopes (Hawaii & Chile) |
https://www.gemini.edu/ |
| Infrared Telescope Facility (IRTF; Hawaii) |
http://irtfweb.ifa.hawaii.edu/ |
| Apache Point Observatory (New Mexico) |
https://www.apo.nmsu.edu/ |
| European Southern Observatory (ESO; Germany & Chile) |
https://www.eso.org/public/ |
| Large Binocular Telescope (LBT; Arizona) |
https://www.lbto.org |
| Mauna Kea Observatories (Hawaii) |
https://www.maunakeaobservatories.org/ |