George Alcock: an artist among the planets
The 2014 George Alcock Memorial Lecture, given at Burlington House, Piccadilly, London, on 2014 May 28
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Archives
Spectroscopic observations of the bright RV Tauri variable R Scuti
A series of spectra of the RV Tauri star R Scuti taken as it rose from a deep minimum to a bright maximum during 2013 October and November reveals major changes taking place in the photosphere and outer atmosphere of the star. This may be the first such series of spectra and demonstrates the capability of amateur spectroscopy for studying these complex stars.
Read moreThe comets of 2002 (Part 1)
This report is the thirteenth in the annual series which gives for each comet: the discovery details, orbital data and general information, magnitude parameters and BAA Comet Section observations. The year was somewhat unusual with several bright comets.
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Analysis of lunar crater timings, 1842-2011
Crater timings are made during a total or partial lunar eclipse as the Moon slowly glides through the Earth’s central shadow cone, or umbra. We have gathered 22,539 observations made at 94 lunar eclipses since 1842 – the largest collection of crater and contact timings ever compiled. In this paper we analyse these timings to derive an improved characterisation of the umbra’s size, shape, and stability over time.
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From the Journal archive
John Chuter takes a look back at the BAA at the outbreak of the Second World War
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