1888 October 8 meeting of the Liverpool Astronomical Society

1888 Zu Chong-Zhi CCD Spectrum

1889 April 12 meeting of the Royal Astronomical Society

1889 April 17 meeting of the Astronomical Society of France

1889 April 17 meeting of the Royal Meteorological Society

1889 December 13 meeting of the Royal Astronomical Society

1889 December 18 meeting of the Royal Meteorological Society

1889 February 20 meeting of the Royal Meteorological Society

1889 February 6 meeting of the Astronomical Society of France

1889 February 8 meeting of the Royal Astronomical Society

1889 January 11 meeting of the Royal Astronomical Society

1889 January 16 meeting of the Royal Meteorological Society

1889 January 9 meeting of the Astronomical Society of France

1889 July 27 meeting of the Astronomical Society of the Pacific

1889 June 14 meeting of the Royal Astronomical Society

1889 June 19 meeting of the Royal Meteorological Society

1889 March 20 meeting of the Royal Meteorological Society

1889 March 6 meeting of the Astronomical Society of France

1889 March 8 meeting of the Royal Astronomical Society

1889 May 10 meeting of the Royal Astronomical Society