British Astronomical Association

Supporting amateur astronomers since 1890

Journal of the British Astronomical Association. Vol.41 No.7

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  • -1BAA Journal Vol. 41. No. 7. 1930-31
  • -1Contents
  • 1REPORT OF THE MEETING OF THE ASSOCIATION. HELD ON WEDNESDAY, APRIL 29, 1931
  • 6REPORTS OF THE SECTIONS
  • 6Variable Star Section
  • 6SS Cygni in 1930
  • 28Light Curve of SS Cygni
  • 10Meteor Section
  • 12Mars Section
  • 7EQUATORIAL MOUNTING FOR 4½-INCH REFRACTOR
  • 12PAPERS
  • 12The Bright Lunar Rays
  • 13Summary of Solar Activity during the First Quarter of 1931
  • 16Preliminary Report of Computations on Tempel's Comet, 1866 I
  • 19Equatorial Mounting and Electric Drive for 4|-inch Altazimuth Refractor
  • 25The Zodiacal Band and the Gegenschein
  • 31Planetary Occultations in 1931
  • 32DIARY for 1931 June
  • 33REVIEWS
  • 33The Dynamic Universe," by James MacKaye
  • 34The Stars in their Courses," by Sir James Jeans
  • 35A Manual of Celestial Photography," by Edward Skinner King
  • 36NOTES
  • 36COMET NOTES
  • 37CONTINENTAL OBSERVATIONS OF MARS
  • 38PLUTO
  • 39ACHROMATIC INTERFERENCE BANDS AND GROUP VELOCITY
  • 40THE FIRST MAPS OF THE MOON
  • 41CLUSTERS OF EXTRA-GALACTIC NEBULAE
  • 42THE LUNAR FIRMAMENT
  • 43ASTRONOMY IN MODERN POETRY
  • 44New Members of the Association
  • 44Candidates for Election
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