It’s my understanding that radio telescopes can only see signals when they hit the dish within a certain range of angles. Is this true? How is the range calculate/what is it called?
In: Physics
The reason it’s a dish is to channel a narrow region of the sky to the detector. Ideally the beam could be the width of the dish, but practically the pointing uncertainty is more like 0.005˚. The spec for new telescopes is more like 10^-4 ˚ .
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