Venus Section        

May 28, 2022

Urgent Request for Venus Observations and Images

Venus Cloud DiscontinuityThe newly discovered Cloud Discontinuity phenomenon was observed during the last few weeks by amateur astronomers António Cidadão in Portugal, Luigi Morrone in Italy, and Clyde Foster in South Africa, who have been contributing their observations to the ALPO Venus Section from 2022 May 15 through 25. An example of their observations accompanies this alert.

The presence of the curious cloud discontinuity has been captured in their images. It is expected that the next observations of this phenomenon will occur again starting 2022 May 30 and about every 5 days afterwards.

It will be important to determine when it will dissipate, so imaging with IR wavelength filters are needed. It is critically important to observe every possible day in order to cover the global situation of the middle level Venusian clouds.

Imaging in UV may be useful in confirming whether this wave dissipates before arriving at the cloud tops of the planet.

Observations should be sent without delay to the ALPO Venus Section at

Important links with detailed background on the Venus Cloud Discontinuity are listed below for further information:

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