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Astronomy and Cosmology
Astronomy and Astrophysics
What does the output of a radio telescope look like?
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[QUOTE="Baluncore, post: 6840682, member: 447632"] The observation is recorded over a period of time. The bandwidth of the signal is determined by the antenna and receiver selectivity. The signal voltage is digitized, so it can be analyzed later using signal processing. In effect, the antenna and receiver is a thermometer and the signal represents a temperature. The signal sounds like frying white noise. With an antenna aperture over about 500 m², the brightest pulsar can be heard in real time in the noise. Accurate radio images are synthesized by recording the same area of sky, with many widely spaced antennas and receivers, simultaneously as the Earth rotates. The recorded signals are later synchronized, then correlated to produce the image. [URL]https://en.wikipedia.org/wiki/Very-long-baseline_interferometry[/URL] [/QUOTE]
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Astronomy and Cosmology
Astronomy and Astrophysics
What does the output of a radio telescope look like?
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