For an explanation, see the main splats page
SPLATS about radio astronomy
The principles of radio astronomy
- A radio telescope uses a large dish to collect and focus the weak radio signals from a distant star in much the same way that telescopes process visible light.
- In 1933, Karl Jansky announced that he had detected radio waves coming from the direction of Sagittarius, after first thinking they came from the Sun.
- In 1942, Grote Reber made the first radio map of the sky and J.S. Hey detected solar radio waves, while wartime radar operators were also detecting signals
- The Square Kilometre Array radio-telescope or SKA, if it is built, would place about a thousand antennas in an array to give superb resolution.
- The SKA would work on the principle of an interferometer, combining the separate signals from the many antennas to build up a single very clear picture.
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