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Supporting amateur astronomers since 1890

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Archives

Other total eclipses in the Solar System?

An extensive survey of the 290 known satellites of the planets and (134340) Pluto, current to 2023, was made to

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The stability of the 430-day period of Betelgeuse

There has been great interest in the claims of a 430-day period in the light curve of Betelgeuse, which is

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A black and white image of Merv, smiling, in middle age

Mervyn Vincent Jones (M. V. Jones) – amateur astronomer of Maryborough, Queensland

Mervyn Vincent Jones (1927 October 21 – 2016 August 6), known as M. V. or Merv Jones, was an Australian

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Two panels. In (a), on the left, the nebula is almost invisible (2020 October). In (b), on the right, the reflection nebula is easily seen as a bright fan shaped area; this was taken in 2023 August

Variable nebulae report, 2020–2023

Due to their unpredictability, variable nebulae have, in recent years, become popular observing targets among some members of the BAA

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Eight drawings showing the sequential progression of the eclipse, from first to fourth contact.

Total eclipse expedition to Waxahachie, Texas, USA

We present observations made by an expedition of BAA members to see the total solar eclipse on 2024 Apr 8

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Mare Imbrium and Mare Frigoris, with a location marked with a yellow arrow east (IAU definition) of Plato

Backyard lunar mineral prospection, Part III: Towards explaining some TLPs based on local minerology & geomorphology

One of the legacies of the Apollo missions and the fleet of unmanned probes that have followed them is the

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Four images of Jupiter, arranged in a square: these are yellow and blue (top left and right), red (bottom left) and RYB (bottom right). Key feaures are described in the caption.

The opposition of Jupiter, 1955–’56

During the previous apparition, there was a weak Revival of the South Equatorial Belt. This was followed during 1955–’56 by

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Diagram showing neutron star as black spot in centre, with rotation axis oriented from bottom left to upper right. The magnetic axis is offset to this, and radiation is emitted (denoted by black arrows) from both magnetic poles.

Pulsar detection & verification with small-aperture antennas

Following a brief introduction to pulsars and how to intercept radio-frequency transmissions from them, this article describes the design and

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Sunspots noticed accidentally – a preliminary survey

A survey of British newspapers has uncovered 41 sightings of sunspots made by untrained people with no optical aid and

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Early members of the New South Wales Branch of the British Astronomical Association

In 1894, three Sydney members of the British Astronomical Association – John Tebbutt, Walter Gale and Robert Innes, all well-known

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