Owens Valley Radio Observatory was created in 1958.
Jicamarca Radio Observatory was created in 1961.
Metsähovi Radio Observatory was created in 1974.
Hartebeesthoek Radio Astronomy Observatory was created in 1961.
Dominion Radio Astrophysical Observatory was created in 1960.
Mount Pleasant Radio Observatory was created on 1986-05-13.
Five College Radio Astronomy Observatory was created in 1969.
Ohio State University Radio Observatory was created in 1961.
Pushchino Radio Astronomy Observatory was created on 1956-04-11.
Coachella Valley Radio Control Club was created in 1938.
Ohio State University Radio Observatory ended in 1998.
Answer #1:Probably the most famous one is the Palomar Observatory.===================================Answer #2:Here is the name of the famous one.There is another that is less famous.Allen Telescope Array at the Hat Creek Radio Observatory,Fremont Peak ObservatoryGoldstone Deep Space Communications ComplexGriffith ObservatoryLas Cumbres Observatory Global Telescope NetworkLeuschner ObservatoryLick ObservatoryMount Wilson ObservatoryOwens Valley Radio Observatory & Solar ArrayPalomar ObservatoryStony Ridge ObservatoryTable Mountain Observatory
The Arecibo Observatory is used for radio astronomy, atmospheric science, and radar observations of planets and asteroids. Its main purpose is to study and understand cosmic phenomena, such as pulsars, galaxies, and the Earth's atmosphere.