Infrared and Submillimetre Observing Conditions on the Antarctic Plateau

Abstract The Antarctic Plateau provides the best terrestrial sites for infrared (IR) and submillimetre (sub-mm) astronomy. In this paper we examine the relative importance of temperature, aerosol content and precipitable water vapour to determine which parameters have the greatest influence on atmos...

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Bibliographic Details
Published in:Publications of the Astronomical Society of Australia
Main Authors: Hidas, Marton G., Burton, Michael G., Chamberlain, Matthew A., Storey, John W. V.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2000
Subjects:
Space and Planetary Science
Astronomy and Astrophysics
Antarctic
South Pole
The Antarctic
Antarc*
South pole
Online Access:http://dx.doi.org/10.1071/as00033
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1323358000002654
Description
Summary:Abstract The Antarctic Plateau provides the best terrestrial sites for infrared (IR) and submillimetre (sub-mm) astronomy. In this paper we examine the relative importance of temperature, aerosol content and precipitable water vapour to determine which parameters have the greatest influence on atmospheric transmission and sky brightness. We use the atmospheric modelling program MODTRAN to model the observed sky spectrum at the South Pole from the near-IR to the sub-mm. We find that temperature and aerosol content determine the quality of near-IR observing conditions, aerosol content is the determining factor in the mid-IR up to 20 μm, while at longer wavelengths, including the sub-mm, it is the water vapour content that matters. Finding a location where aerosol levels are minimised is a key constraint in determining the optimum site on the Antarctic Plateau for an IR observatory.

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