Dawn twilight fireball lights up the sky
At 07:58 UT on 2013 Dec 19, a fireball was observed across the UK from Yorkshire to the Irish Sea, and BAA observers recorded it on video
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Archives
A Messier short-marathon for UK observers
A ‘Messier Marathon’ challenge suitable for observers at 51 deg. north!
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Changing characteristics of an anticyclone in Jupiter’s South South South Temperate Current
The longitude and latitude of a white oval (A1) on Jupiter was measured on 83 different visible light images.
Read moreCentral and non-central total lunar eclipses
A study of the extremes of eclipse behaviours between 2000 BC and 3000 AD.
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The Comets of 2001: Part 2
This is the author’s second report of the comets of 2001.
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Topography of the Alphonsus and Arzachel area of the Moon
Alphonsus (111km diameter) is one of the most intensively studied craters in the solar system.
Read moreThe Occultation Machine of HM Nautical Almanac Office
This paper describes an ingenious Occultation Machine that simplified the process of making occultation predictions.
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