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radio telescope
subject			fact

radio telescope	has reference astroweb
	has definition Non-optical telescope (of various types) which, instead of focusing light received from a distant object, focuses radio signals onto a receiver-amplifier.
	has definition Sensitive radio antennae employed to detect the radio energy emitted by nebulae, galaxies, pulsars, etc.
	has definition A device for gathering and amplifying radio energy typically by using a metallic dish antenna
	is a kind of electromagnetic telescope
	is a kind of electromagnetic telescope
telescope	has wavelength sensitivity
	has angular resolving power
	has effective diameter
	has aperture
	has focal ratio
	has operator
	has purpose observe celestial objects
	has location
artifact	has creator
	has creation date
	has owner
physical object	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of radio telescope :

• Arecibo (5 facts)
• radio interferometer (3 kinds, 22 facts) - Type of radio telescope that relies on the use of two or more aerials at a distance from each other to provide a combination of signals from one source which can be analyzed by computer. Such an analysis results in a resolution that is considerably better than that of a parabolic dish aerial by itself because of the greater effective diameter.

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