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I understand how visible light images are captured with a lens and 2D array of sensors, but not sure how radio telescopes create images. Is it just a single radiowave-sensitive sensor that is scanned across the sky to form a 2D image?

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I understand how visible light images are captured with a lens and 2D array of sensors, but not sure how radio telescopes create images. Is it just a single radiowave-sensitive sensor that is scanned across the sky to form a 2D image?	13