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Title:
A Fourier Transform Spectrometer for Measurement of Atmospheric Transmission at Submillimeter Wavelengths
Authors:
Paine, Scott; Blundell, Raymond; Papa, D. Cosmo; Barrett, John W.; Radford, Simon J. E.
Affiliation:
AA(Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138; ), AB(Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138; ), AC(Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138; ), AD(Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138; ), AE(National Radio Astronomy Observatory, 949 North Cherry Avenue, Tucson, AZ 85721; )
Publication:
The Publications of the Astronomical Society of the Pacific, Volume 112, Issue 767, pp. 108-118. (PASP Homepage)
Publication Date:
01/2000
Origin:
UCP
PASP Keywords:
INSTRUMENTATION: INTERFEROMETERS, INSTRUMENTATION: SPECTROGRAPHS, SITE TESTING, SUBMILLIMETER
DOI:
10.1086/316497
Bibliographic Code:
2000PASP..112..108P

Abstract

We describe a Fourier transform spectrometer for measurements of atmospheric transmission in the spectral interval 300 GHz to 3.5 THz. This instrument has been developed to evaluate prospective sites for radio astronomical observations at frequencies above 1 THz. Measurements have been made on Mauna Kea, Hawaii, and at the site of the future Millimeter Array near Cerro Chajnantor in northern Chile. Chajnantor frequently exhibits significant transmission in atmospheric windows at frequencies above 1 THz. Here we outline the design and characteristics of the instrument, discuss data processing methods, and present sample measurements from Chajnantor.
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