CARBON DIOXIDE BANDS IN THE ATMOSPHERE OF VENUS.
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Date
1967
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Ohio State University
Abstract
Recent observations of Venus have provided spectra which show the $CO_{2}$ bands from 7800 {\AA} to 12177 {\AA}. The bands near 1.2 microns have been impossible to photograph for several years because the only available infrared film (Kodak 1Z) is not sensitive beyond $\sim11,500$ {\AA}. Two new methods are now available and they have enabled us to photograph the $CO_{2}$ bands at $1.2 \mu$. The first method is the two-stage RCA infrared image tube, developed with the support of, and kindly made available by, the Carnegie-NSF Image Tube Committee. The second method uses infrared film, T/0-106 which has a peak sensitivity at $1.05 \mu$. Progressively longer exposure times are required at longer wavelengths, and for this reason we were unable to obtain the $CO_{2}$ bands at $1.4 \mu$ for Venus. Equivalent widths of individual rotational lines were measured for these bands and rotational temperatures were found for the Venus atmosphere.
Description
The authors wish to thank Teclinical Operations Incorporated, particularly Mr. Richard Wilkins, for their excellent cooperation and assistance with the infrared film. This paper represents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract No. NAS7-100, sponsored by the National Aeronautics and Space Administration.
Author Institution: Astronomy Department, University of Texas; Astronomy Department, Rand Corporation; Astronomy Department, Jet Propulsion Laboratory
Author Institution: Astronomy Department, University of Texas; Astronomy Department, Rand Corporation; Astronomy Department, Jet Propulsion Laboratory