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Why do radio telescopes work better down in the valleys?
Kenziegirl24
Radio telescopes tucked into valleys can "hide" in there from interference that may be radiated into the side of the antenna array from earth sources. Better shielding equals less noise (interference) and greater resolution of a desired signal. Remember that radio telescopes are highly directional, and they don't "see" signals to the sides well. Now consider the "closeness" of a source on earth compared to any space object that is an image objective. There is no comparison. Any source of interference on earth will be a zillion times "closer" and the signal will be a zillion times "larger" than a space objective, even though the noise is "coming in from the side" to hit the dish. Bad news for the radio astronomer. Hide the dish, slash interference radiated into the sides of your dish and get good (better) results. Piece of cake.
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