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The Journal of the British Astronomical Association, 2016 October

Volume 126, Number 5

A preliminary report on the 2016 Perseid meteor shower shows the predicted enhanced activity was seen by many observers in the UK on the night of August 11/12. 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:

Refereed Papers

Short paper: Photometric and spectroscopic observations of the outburst of the symbiotic star AG Draconis between 2016 March and June
The symbiotic star AG Draconis experienced a double-peaked outburst of 0.6 magnitudes in 2016 April and May. Photometry and spectroscopy through the outburst showed the B-V colour index varying linearly with the V magnitude and enabled the temperature variation of the hot star to be calculated from the changing flux in the Hb and He II 4686Å emission lines.
David Boyd
A lunar dome north-east of the crater Schröter
In this study we examine a lunar dome identified using Lunar Reconnaissance Orbiter Camera Wide-angle Camera (LROC WAC) images, Selene-1 (Kaguya) and Clementine multispectral data, the Chandrayaan-1’s Moon Mineralogy Mapper (M3), and the LROC WAC-based GLD100 DTM.
Raffaello Lena & Barry Fitz-Gerald
The period of R Scuti
R Scuti is a variable star which, for over a century, has shown episodes of RV Tauri-type behaviour, together with significant spectral variations that appear to be associated with its brightness. This paper examines the photometric data amassed by the BAA and the AFOEV, and finds periods of nominally 71 and 142 days.
J. J. Howarth
High resolution imaging of mutual events of the Jovian satellites during the 2014/2015 apparition
During the 2014/2015 Jupiter apparition several mutual occultations and eclipses of the Galilean satellites took place. These mutual events occur every 5.93 years. A number of the events were recorded using 14-inch [355mm] or larger telescopes and different types of cameras. Processing programs like Registax 6.1 or Autostakkert2! struggle to grade, align and stack the tiny images of the Jovian satellites. To obtain high resolution images different processing procedures were employed to optimise the quality of the images, including hand selection and the use of master frames. Several occultations and eclipses were recorded at high resolution.
John Sussenbach & Willem Kivits