ISSTT Proceedings

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Installation of the Antarctic Sub-mm Telescope and Remote Observatory (AST/RO)

Authors:
Antony A. Stark
Abstract:
Atmospheric measurements by various observers indicate that the Antarctic Plateau is the best submillirneter-wave observatory site ever tested. AST/RO, a 1.7 m diameter telescope for astronomy and aeronomy studies at wavelengths between 200 and 2000 ┬Ám, was installed at the South Pole during the 1994-95 Austral summer, after some logistical difficulties were overcome. The instrument is now operational with four heterodyne receivers and three acousto-optical spectrometers. The optical design is Gregorian, offset in both azimuth and elevation, with the exit pupil at the chopping tertiary mirror: this arrangement provides for low switched-power offsets even when the beam is thrown several degrees. There is a Coude focus in a warm, spacious receiver room and also a Nasmyth focus with optical and mechanical properties similar to the KAO.
Categories:
Antennas & Telescopes, Systems
Year:
1995
Session:
3
Full-text:
Download a PDF of this paper.
Page Number(s):
150-154