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Archives

The opposition of Jupiter, 1954 – 1955

A report of the Jupiter Section (Director: J. H. Rogers) After having been invisible during the previous opposition, late in

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Harry Thornton, Leslie Rae, & the rise & fall of The Moon

Harry Thornton and Leslie Rae were the Editors of the BAA Lunar Section publication The Moon from 1953 to 1967,

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The nightside of Venus visible next to the crescent of its illuminated hemisphere; this photo was taken in infrared

The 2022 western elongation of Venus

A report of the Mercury & Venus Section (Director: P. G. Abel)   Analysis of the observations made by Section

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A photograph of the bearded Brorsen, sitting in a chair with arms folded

The tortuous discovery of the Gegenschein, false zodiacal light & zodiacal band – Brorsen vs Jones

It is routinely thought that Brorsen discovered the Gegenschein and zodiacal band in 1854. Here, it is argued that priority

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Figure 1. O−C plot for all eclipses of HS 2325 with respect to the linear ephemeris in Equation 1. Published eclipse timings are in black, those by the author in red.

Evidence of abrupt changes in the orbital periods of

We report evidence from eclipse timing that two otherwise apparently normal cataclysmic variables have experienced abrupt changes in their orbital

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Four views of Jupiter, labelled A to D. A and D are colour photographs, while B and C are black and white sketches.

The opposition of Jupiter, 1953–’54

No BAA report for Jupiter in 1953–’54 has previously appeared. The apparition of 1952–’53 had been one of great activity,

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A light curve, for illustrative purposes (labels not legible)

A 6.65-day pseudo-periodicity in OJ 287’s flaring in 2023 Mark Kidger

Since they were discovered in the early 1960s, quasars have posed many problems for astrophysics. It is now generally accepted

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Photometry of low-amplitude slow rotators: the Hilda-group asteroid (1269) Rollandia

Photometry of images of asteroid (1269) Rollandia taken by seven observers at its 2018–’19 apparition has been performed using Astrometrica

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Two black-and-white images of the planet, with the axis or rotation aligned left to right. Belts, including a darker equatorial region, are well seen.

Uranus during the 2016 apparition

A report by the Uranus Coordinator of the BAA Saturn, Uranus & Neptune Section (Director: Mike Foulkes) This report describes

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In the centre-band image, filaments and bright plage is more clearly seen; the flare appears bright against the dark umbrae and penumbrae of the active region

Observations of a major solar flare, revisited

Hydrogen-alpha observations of a major flare from 2003 November are revisited.   Introduction 2023 November marks the 20th anniversary of

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