Prime Focus Reflector
The Arecibo Observatory is in the United States of America. It is in the municipality of Arecibo which is in Puerto Rico. It is a very famous radio telescope.
The first telescope used in Arecibo, Puerto Rico was the Arecibo Ionospheric Observatory, which began operation in November 1963. This telescope was originally built for ionospheric and radio astronomy research.
The William E. Gordon Radio Telescope at Arecibo in Puerto Rico stays where it's at, permanently. Its 'dish' reflector is 305 meters ( 1,000 feet ) across, and it's built into a valley in the ground.
Arecibo
The Arecibo telescope can detect radio waves in the electromagnetic spectrum. It operates at radio frequencies between 300 MHz to 10 GHz, allowing it to study objects such as pulsars, galaxies, and the Earth's atmosphere.
Arecibo, VLA
Currently the largest optical telescope is "The Great Canary Telescope" (Gran Telescopio Canarias) in Spain, it has an apeture of 10.4 metres. There is an optical telescope under construction in Chilie that when completed will have an apeture of 21.4 metres, called the Giant Magellan Telescope. The largest single dish apeture radio telescope is the Arecibo Radio Telescope in Puerto Rico which is 305 metres.
The Arecibo Observatory is in the United States of America. It is in the municipality of Arecibo which is in Puerto Rico. It is a very famous radio telescope.
The first telescope used in Arecibo, Puerto Rico was the Arecibo Ionospheric Observatory, which began operation in November 1963. This telescope was originally built for ionospheric and radio astronomy research.
The Arecibo radio telescope is the largest radiotelescope in the world. It is suspended in a valley in the Puerto Rican mountains.
Arecibo hosts the largest radio telescope in the world, filling a mountain valley in Puerto Rico. Perhaps you saw it pictured in the James Bond movie "Goldeneye".
The William E. Gordon Radio Telescope at Arecibo in Puerto Rico stays where it's at, permanently. Its 'dish' reflector is 305 meters ( 1,000 feet ) across, and it's built into a valley in the ground.
Radio telescopes collect radio waves. Optical telescopes capture visible light waves.
Arecibo
The Arecibo telescope can detect radio waves in the electromagnetic spectrum. It operates at radio frequencies between 300 MHz to 10 GHz, allowing it to study objects such as pulsars, galaxies, and the Earth's atmosphere.
As far as I know, there is no "optical radio telescope". There are, separately, optical telescopes (which work with visible light), and radio telescopes (which work with radio waves).
In 1974 by the worlds largest radio telescope at Arecibo in Puerto Rico.