What is an infra-red telescope?
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Infrared telescope is the telescope that uses infrared light to detect celestial bodies.
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The two advantages of a reflecting telescope over a refracting telescope are as follows: (i) There is no chromatic aberration in case of reflecting telescopes as the objective is a mirror. (ii) Spherical aberration is reduced in case of reflecting telescopes by using mirror objective in the form of a paraboloid.
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