A dish antenna is most sensitive to radio waves from a narrow ... the FOV at a wavelength of 21 cm is 0.04 radians or 2.5 degrees (five times the angular width of the Moon). SETI observations use ...
These have a combined collecting area equivalent to a single-dish antenna 130 meters (426 feet) across. There are very few radio telescopes that sport that much metal mesh, and sensitivity is always a ...
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