Physics – Optics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984stin...8515538k&link_type=abstract
Unknown
Physics
Optics
Cassegrain Optics, Infrared Spectrometers, Mars Atmosphere, Superheterodyne Receivers, Telescopes, Venus Atmosphere, Atmospheric Chemistry, Atmospheric Models, Atmospheric Physics, Carbon Dioxide, Carbon Dioxide Lasers, Concentration, Interstellar Gas
Scientific paper
A superheterodyne spectrometer of medium infrared range was developed for a Cassegrain optics astronomical telescope. This device provides resolution similar to a laser spectrometer. The local oscillator is a carbon dioxide laser. The intermediate frequency range is 2 GHZ. The spectral resolution is 500,000 to 5 million. The instrument reaches the maximum theoretical sensitivity of a superheterodyne receiver. Absorption and emission of gaseous carbon dioxide in the atmosphere of Mars and Venus is measured by the system and atmospheric models are constructed. Other planets, stellar sources, and interstellar gas are also examined.
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