British Astronomical Association

Supporting amateur astronomers since 1890

BAA Journal – Volume 131 Number 2 – April 2021

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  • Refereed Papers

  • 81David Sinden (1932–2005): A life in optics - John Nicholt  
  • 93Searching for lunar domes in the Sinus Iridum region: identification of a dome termed L1 Raffaello Lena, Maximilian Teodorescu & Jim Phillips
  • 97Using Gaia DR2 data to determine the distances of young star clusters & their distribution in the galactic plane - William B. Samsont 
  • 105The opposition of Mars, 2014: Part II - Richard McKim

  • Notes and News

  • 67From the President - Alan Lorrain
  • 68Winners of the Christmas Quiz - Philip Jennings
  • 68The annular solar eclipse of 2021 June 10 - Peter Macdonald
  • 69In brief - Philip Jennings
  • 69Auroral & NLC activity 2021 January 1 – February 20 - Sandra Brantingham

  • Review

  • 72of Mutual phenomena of Jupiter’s moons in 2021 - John Rogers
  • 73A well-observed double star occultation: SAO 93840 - Tim Haymes & Alex Pratt
  • 74An interview with Alexandra Hart
  • 76Solar Section - Lyn Smith
  • 78Europlanet bid success for variable nebulae observers Callum Potter & Grant Privett
  • 79The taxonomy of mountings - David Arditti
  • 80From the Journal archive - John Chuter
  • 113The Archives From the BAA bookshelf - Richard McKim
  • 114From the BAA Archives - John Chuter
  • 118What stars are made of: The life of Cecilia Payne–Gaposchkin (Moore) - Mike Frost

  • Letters

  • 122BAA Autumn Meeting, 2020 September 5 - Alan Dowdell

  • BAA Updates

  • 115Obituary: Iain Nicolson (1945–2020) - Peter Cattermole
  • 116Nominations for the Ballot for the BAA Council & Board of Trustees - Bill Tarver
  • 117The BAA Awards & Medals for 2021 - Bill Tarver

  • Observers' Forum

  • 119Nebulae, clusters & variable stars - Roger Pickard
  • 120Ancient Light: imaging a quasar without a telescope - Steve Barrett
  • 121Two contrasting galaxies in Coma Berenices - Stewart Moore
  • 122Lettertt Revisiting lunar observations under repeated conditions - Bill Leatherbarrow

  • Etc.

  • 92Membership information
  • 117Members elected
  • 124Sky notes for 2021 April & May - Nick Hewitt
  • 126Meetings diary & small advertisements
  • 127Board of Trustees and Council, Session 2020–2021
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