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The Journal of the British Astronomical Association, 2014 August

Volume 124, Number 4

Commemorating the contribution of BAA members in the First World War, and 150 years of astronomical spectroscopy. Log in or join the BAA today to view this journal online. A full list of contents is also available. Selected highlights from this Journal:

Also in this issue

It's darker down south
The night sky is getting darker in the south of England, where astronomers, environmentalists and others who care about the night-time environment are working on dark-sky initiatives.
Bob Mizon
Lost comet 72P Denning - Fujikawa recovered
This periodic comet was discovered by William F. Denning of Bristol, the BAA’s first Comet Section Director, on 1881 Oct 4.13 but was then lost until its accidental recovery by Shigehisa Fujikawa (Onohara, Kagawa, Japan) on 1978 Oct 9.81, but was missed at the next three returns despite careful searches. It has now been recovered again by Hidetaka Sato (Japan).
Denis Buczynski

Refereed Papers

The British Astronomical Association and the Great War of 1914-1918
Marking the centenary of the outbreak of the First World War, this paper considers the effect of the war on the BAA and pays tribute to some of its members who were involved in the conflict.
Jeremy Shears
The Waverton long pendulum experiment, 2009-2012
In 1851 Jean Leon Foucault demonstrated a proof that the Earth turns on its axis, by swinging a long (67m) free pendulum from the roof of the Pantheon in Paris. This paper describes attempts started in 2009 in a rural Cheshire church to repeat that experiment, and what those attempts revealed.
Andrew Bate
Recording of 'sprites' by video meteor detection cameras
This paper describes a series of 'sprites' serendipitusly recorded by video cameras operated by members of the BAA meteor section
William Stewart
The Ashen Light of Venus: the oldest unsolved solar system mystery
The Ashen Light, a feeble glowing or colouration of the night-side of Venus, has been discussed ever since Riccioli reported it in 1643.
William Sheehan, Klaus Brasch, Dale Cruikshank & Richard Baum
Estimating the time of first light of SN 2014J in M82 from MicroObservatory pre-discovery images
SN 2014J was discovered on 2014 January 21, but prediscovery images suggest the supernova may have exploded several days earlier.
Martin J.F. Fowler & Frank Sienkiewicz