The 2019–’20 eastern elongation of Venus, Part I: Observations of the dayside

This report covers observations of Venus made by Section members during the 2019–’20 eastern elongation. Part I covers observations of the dayside; various features are discussed, including cloud formations and unusual atmospheric phenomena which occurred during this time. Using phase estimates, a date for dichotomy is established, and observations made near inferior conjunction are examined.

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Sunspot groups without active region numbers

Using personal white-light disc drawings of the Sun, it is assessed that some 8% of all sunspot groups observed during the 10 years from 2009 to 2018 have not been assigned an NOAA active region number. This paper examines these groups to try to identify why this might be the case.

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