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These Radio Telescopes See Almost to the Beginning of Time

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Phased array feed

The circular object at the top of the antenna is the phased array feed. This is a device that creates 30 separate simultaneous beams with each receiver, which gives the antenna a very wide field of view of 30 square degrees.

Credit: Michelle Starr/CNET

There are few places in the world that can accommodate a radio telescope.

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