Later messages had been picked up by radio telescope and converted to appear as symbols on the oscilloscope screen.
The S-Regions are invisible to the eye through an optical telescope, but are detected with ease by a radio telescope.
Later, the boys helped check circuits while the radio telescope swung through a variety of arcs, with Farid at the controls.
Rick turned and looked at the radio telescope at Sahara Wells, its great parabolic reflector gleaming in the brilliant moonlight.
|radio telescope |
An instrument that consists of a radio receiver and antenna system mounted on a wide, bowl-shaped reflector, used to detect radio-frequency emissions from astronomical objects. The reflector and receiver form a parabolic antenna; incoming radio waves are focused by the reflector onto the receiver, where the radio signals are translated into electrical signals for further processing or electronic display. Due to the long wavelengths of radio waves, the reflectors of radio telescopes must be very large to focus the waves at a good resolution. Separate reflectors are sometimes linked in fixed arrays to act as a single collector.