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1971•Monthly Notices of the Royal Astronomical SocietyOpen access

High Resolution Radio Observations of the Planet Venus at a Wavelength of 6 CM

Ryan Hall, N. J. B. A. Branson

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Abstract

The Cambridge One-Mile radio telescope has been used at a wavelength of 6 cm to obtain maps of the planet Venus with a resolution of |${6}^{\prime \prime{}}\,\times\,{21}^{\prime\prime{}}\,\text{arc}$|⁠. A number of possible models for the atmosphere of Venus are considered, and it appears that the surface pressure is 110 ± 15 atmospheres and the surface temperature |$790\,\pm\,{20}^{\circ}\,\text{K}$|⁠. Approximately 0.4 per cent water vapour is present in the lower atmosphere. Some features are found on the disc of the planet, and temperature variations of up to 50°K may occur over the surface of Venus.

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The Cambridge One-Mile radio telescope has been used at a wavelength of 6 cm to obtain maps of the planet Venus with a resolution of |${6}^{\prime \prime{}}\,\times\,{21}^{\prime\prime{}}\,\text{arc}$|⁠. A number of possible models for the atmosphere of Venus are considered, and it appears that the surface pressure is 110 ± 15 atmospheres and the surface temperature |$790\,\pm\,{20}^{\circ}\,\text{K}$|⁠. Approximately 0.4 per cent water vapour is present in the lower atmosphere. Some features are found on the disc of the planet, and temperature variations of up to 50°K may occur over the surface of Venus.

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Available abstract

The Cambridge One-Mile radio telescope has been used at a wavelength of 6 cm to obtain maps of the planet Venus with a resolution of |${6}^{\prime \prime{}}\,\times\,{21}^{\prime\prime{}}\,\text{arc}$|⁠. A number of possible models for the atmosphere of Venus are considered, and it appears that the surface pressure is 110 ± 15 atmospheres and the surface temperature |$790\,\pm\,{20}^{\circ}\,\text{K}$|⁠. Approximately 0.4 per cent water vapour is present in the lower atmosphere. Some features are found on the disc of the planet, and temperature variations of up to 50°K may occur over the surface of Venus.

Key concepts: Venus, Physics, Planet, Atmosphere (unit), Wavelength, Atmosphere of Venus, Astrophysics, Radio telescope

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