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Published June 1, 1996 | Published
Journal Article Open

Calibration of planetary brightness temperature spectra at near-millimeter and submillimeter wavelengths with a Fourier-transform spectrometer


A medium-resolution Fourier-transform spectrometer for ground-based observation of astronomical sources at near-millimeter and submillimeter wavelengths is described. The steps involved in measuring and calibrating astronomical spectra are elaborated. The spectrometer is well suited to planetary spectroscopy, and initial measurements of the intrinsic brightness temperature spectra of Uranus and Neptune at wavelengths of 1.0 to 1.5 mm are presented.

Additional Information

© 1996 Optical Society of America. Received 28 August 1995; revised manuscript received 27 November 1995. The authors thank T. Encrenaz for assistance during the July observations. This work is supported by National Science Foundation grant AST-9313929.

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