Supporting amateur astronomers since 1890
By the use of a mechanical shutter in combination with the clear/expose/readout cycle of a CCD camera, multiple images of an artificial satellite or a closely passing Near Earth Object can be obtained, enabling improved astrometric positions and orbital parameters of such objects to be determined.
Read moreWho was Thomas Hinsley Astbury, and why was a plaque in his honour erected in a junior school in Wallingford, England? Jeremy Shears examines the life of this English schoolteacher – and important variable star observer.
Read moreDetails are given of the visibility of the 2015 total eclipse in Svalbard and the Faroe Islands, and the very large partial eclipse which will be seen from the British Isles,
Read more
Bill Leatherbarrow’s second Presidential Address explores the changes in amateur astronomy during the past 50 years, coinciding with his own membership of and activity within the British Astronomical Association.
Read moreThe longitude and latitude of a white oval (A1) on Jupiter was measured on 83 different visible light images.
Read moreA study of the extremes of eclipse behaviours between 2000 BC and 3000 AD.
Read more
This is the author’s second report of the comets of 2001.
Read moreAlphonsus (111km diameter) is one of the most intensively studied craters in the solar system.
Read moreThis paper describes an ingenious Occultation Machine that simplified the process of making occultation predictions.
Read more