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44. Astronomical Observations From Outside The Terrestrial Atmosphere

Published online by Cambridge University Press:  25 April 2016

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Commission 44 is by title technique oriented. The following statement of the role of the commission was prepared for use by the General Secretary in responding to requests by non-astronomers with respect to the activities of IAU commissions.

‘The Earth’s atmosphere is opaque to radiation throughout most of the electromagnetic spectrum. The light reaching the surface of the Earth from celestial objects is confined primarily to the visual region of the spectrum and a larger window in the radio region. Much of the infrared and all the far ultraviolet, X-ray and γ-ray radiation are absorbed in the upper atmosphere. Thus astronomers must carry their telescopes and auxiliary instrumentation above the Earth’s atmosphere to unlock the clues on the structure of the universe revealed by the light at these wavelengths. Furthermore the light in the accessible region of the spectrum that does reach the surface of the Earth is distorted and scattered in such a manner that the spatial resolution and details of the radiating source is seriously degraded.

Type
Research Article
Information
Transactions of the International Astronomical Union , Volume 16 , Issue 3: Reports on Astronomy , 1976 , pp. 195 - 220
Copyright
Copyright © Reidel 1976

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