F
| Name | Established | Location |
| Fabra Observatory | 1906 | Barcelona, Spain |
| Fan Mountain Observatory | 1966 | Albemarle County, Virginia, USA |
| Five-hundred-meter Aperture Spherical Radio Telescope | 2013 | Duyun, Pingtang County, Guizhou Province, China |
| Félix Aguilar Observatory | 1965 | San Juan, Argentina |
| Fernbank Observatory | Atlanta, Georgia, USA | |
| Fermi Gamma-ray Space Telescope | 2008 | Orbit |
| Fick Observatory | 1966 | Boone, Iowa, USA |
| Five College Radio Astronomy Observatory | 1976 | New Salem, Massachusetts, USA |
| Flarestar Observatory | San Gwann, Malta | |
| Foggy Bottom Observatory | 1951 | Hamilton, New York, USA |
| Foothill Observatory | Los Altos Hills, California, USA | |
| Ford Observatory | 1998 | Ithaca, New York, USA |
| Fox Observatory | Sunrise, Florida, USA | |
| Fox Park Public Observatory | 1999 | Potterville, Michigan, USA |
| Francis Marion University Observatory | 1982 | Florence, South Carolina, USA |
| Fremont Peak Observatory | 1986 | San Juan Bautista, California, USA |
| Frosty Drew Observatory | 1980s | Charlestown, Rhode Island, USA |
| Fuertes Observatory | 1920's | Ithaca, New York, USA |
Read more about this topic: List Of Astronomical Observatories
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