In This Issue:

• Editorial
• Calgary General Assembly Successful   Robert Pike
• Abstracts of Papers Presented at Calgary General Assembly   G.N. Patterson
  • A Planetary and Lunar Astrophotography Exposure Guide   G. N. Patterson
  • Burnham’s Binaries: Some Historical Comments   P. Teece
  • Magnitudes, Photons and the Eye   R.L. Bishop
  • The Sky Brightness Programme and the Growth of Light Pollution   R. Pike
  • Diagonal Mirrors   William T. Peters & Robert Pike
  • The Use of a “Flat Star Globe” or Cylindrical Astrolabe   L. D. Bogan
  • Application of the Photoelectric Photometer in Amateur Astronomy   D. Somers
  • Using Compass and Protractor to Locate Planets   J.D. Jones
  • The Film “Communing with the Heavens”   Mary W. Grey
  • The Total Solar Eclipse of 1979 February 26   J.E. Kennedy
  • Photoelectric Photometry with a Small Telescope   C. D. Scarfe
• 1977 RASC Observing Display Competition at Toronto
• Oculars (Eyepieces)   G.N. Patterson
  • A. The Huygens Ocular
  • B. The Ramsden Ocular
  • C. The Kellner Ocular
  • D. The Erfle Ocular
  • E. The Orthoscopic Ocular
  • F. The Concave Ocular
  • Parafocal Oculars
  • Care of Oculars