Spectroscopic observations of winds on Venus. I - Technique and data reduction

Details Spectroscopic observations of winds on Venus. I - Technique and data reduction Spectroscopic observations of winds on Venus. I - Technique and data reduction

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...38..435y&link_type=abstract

Icarus, vol. 38, June 1979, p. 435-450.

Physics

6

Carbon Dioxide, Data Reduction, Line Spectra, Oxygen Spectra, Spectrophotography, Venus Atmosphere, Wind Measurement, Doppler Effect, Red Shift, Telluric Lines, Venus, Wind, Reduction, Spectrum, Rotation, Observations, Spectrograph, Atmosphere, Doppler Effect, Wavelengths, Spectroscopy

Scientific paper

Methods of measurement and reduction of high-dispersion photographic spectra of Venus are presented. Preliminary results are consistent with slow direct or no rotation at the level sample, and disagree strongly with a 4-day retrograde rotation. A serious systematic error, which affects much published work, is due to blending of solar lines in the sky with those reflected from the planet. This always tends to produce a spurious retrograde 'rotation'. Only data obtained in a dark sky, or daytime observations from which the sky lines have been accurately subtracted, can be relied upon. All such data give low wind speeds.

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