Cooled submillimeter Fourier transform spectrometer flown on a rocket

Details Cooled submillimeter Fourier transform spectrometer flown on a rocket Cooled submillimeter Fourier transform spectrometer flown on a rocket

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992rsci...63.3249g&link_type=abstract

Review of Scientific Instruments (ISSN 0034-6748), vol. 63, no. 6, June 1992, p. 3249-3260. Research supported by NSERC and Univ

Computer Science

8

Fourier Transformation, Liquid Helium, Microwave Spectrometers, Rocket-Borne Instruments, Submillimeter Waves, Data Acquisition, Power Spectra

Scientific paper

A liquid-helium-cooled Fourier transform spectrometer, which was used for measuring the spectrum of cosmic background radiation in the wavenumber range of 2 - 30/cm, is described in detail. The spectrometer, which had to fit inside a Black Brant VC rocket, 17 in. in diameter, is a cylinder 16 in. in diameter and 40 in. long. In the spectrometer design, the sky is continuously compared with a well characterized internal source, which due to the symmetry of the optical layout is in an equivalent place to the sky. Systematic errors inherent in simpler instruments have been substantially reduced.

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