Guest book for:

• 1960 General Assembly
• 1961 Annual Meeting
• 1963 General Assembly

The Guest Book used for the 1965, 1966, and 1967 General Assemblies. This contains the signatures of many well-known Society members (and some AAVSO members as well).

The date of this document is unknown.

INTRODUCTION

The Sky At Night is a P1J1 topic recommended for study in year six. The purpose of this unit is not to amass a large collection of facts concerning celestial objects but rather to provide real experiences for the pupils from which concepts of the earth's motions and the relative sizes and distances of the more familiar objects in outer space might be developed.

Members of

THE
ROYAL ASTRONOMICAL SOCIETY
OF CANADA

252 COLLEGE STREET - TORONTO 2B, ONTARIO

FOR USE OF MEMBERS ONLY

Permission for the use of this membership
list for other purposes must be obtained
from the National Office.

1968 August 1

The date of this document is uncertain.

A Visit to Two Canadian Craters, by Kenneth E. Chilton.

by K.E. Chilton, F.R.A.S.

• ECLIPSING BINARIES
  • Algol type Variables
  • Beta Lyrae Stars
  • W Ursae Majoris Stars
  • Peculiar Eclipsing Binaries—W Ser, UX UMa types
• INTRINSIC VARIABLES
  • RR Lyrae Stars
  • Classical Cepheids
  • Beta Canis Majoris Variables
  • Delta Scuti Variables
  • Long Period Variables
  • Semi-Regular Variables—A, B, C, D
  • RV Tauri Stars
  • Irregular Variables
  • Eruptive Variables—U Gem, Z Cam
  • Nebular Variables—RV Aur, T Ori, T Tau

The date of this document is unknown.

K.E. Chilton—Centennial Observatory
93 Currie St.,
Hamilton Ont.

• Building of Equipment
• Observing and Recording
• Reading, Viewing, Reporting
• Sunspot Viewer
• Crater Diorama
• Orrery, A Planetary System in Miniature
• Three Dimensional Constellation Viewer
• Books, Magazines, Charts, Periodicals, Etc., Etc.

POSSIBLE MAGNITUDE VARIATIONS OF SATURN'S SATELLITES

by K.E. Chilton, Planetary Coordinator

For many years it has been known that he magnitude of Iapetus, Saturn's outermost moon, is variable. Recent observations have indicated that some of the other moons may vary in brightness, too. (Refs. 1,2) This was pointed out in Planetary Bulletin No.9. However, observers were left ot their own devices to work out the positions of the satellites.

OFFICIAL OBSERVING PROGRAMME

The Royal Astronomical Society of Canada
Hamilton Centre

Notice: This book is the property of the Hamilton Centre and is being loaned to you to stimulate interest in observing and to help you make observations of scientific value.