The largest radio telescope in Arecibo, installed in the crater of an extinct volcano, has a paraboloid reflector 300 m

The largest radio telescope in Arecibo, installed in the crater of an extinct volcano, has a paraboloid reflector 300 m in diameter directed towards the zenith. How can you observe objects that do not pass through the zenith with this telescope?

In principle, any radio telescope records radio emission in a large solid angle due to the existence of a radiation pattern. To observe specific space objects, a radiation receiver is moved along the focal surface of the mirror on guy wires.

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