The Handbook for 1943 is the thirty-fifth issue. The times of moonrise and moonset, first printed last year, are now extended to include five latitudes, namely, 40, 45, 50, 52 and 54 degrees. The page of meteorological information for places in Europe and Asia is not given this year; but the tables of lunar occultations for Canadian stations appear again. Messier’s catalogue has been replaced by three tables giving more complete information about clusters, galactic nebulae, and extra-galactic nebulae.
The Handbook for 1942 is the thirty-fourth issue. Its chief changes from that of last year a re : (1) On pages 17 to 23 the times of moonrise and moonset are given for each day of the year for four latitudes. This information has been prepared in response to a request from instructors in the Air Force; (2) A table of meteorological information for stations in Europe and Asia is given on page 3 of the cover.
The Handbook for 1941, which is the thirty-third issue, is arranged similarly to that of last year. The chief changes are: (1) The ephemerides of the bright asteroids have been omitted; (2) A list of stars used in air navigation has been added.
The Handbook for 1940, which is the thirty-second issue, is arranged similarly to that of last year. The chief changes are: (1) The table of constellations has been re-set, giving the English as well as the Latin names; (2) The table of brightest stars has been completely revised by Dr. Harper and includes the latest available information; (3) An account of the transit of Mercury in 1940 is given.
In the Handbook for 1939, which is the thirty-first issue, numerous changes have been made. By giving the times of sunrise and sunset for every second day, although additional latitudes have been included, there has been a saving of six pages of space. This has allowed the inclusion of times of beginning and ending of twilight, of ephemerides of Saturn’s satellites and of the brighter asteroids, the extension of information on Meteors and Occultations, and the insertion of a table of miscellaneous Astronomical Data. The table of Satellites has also been revised.
Jennifer Ann Csele (b.1996) was awarded first place in the 2013 Intel International Science and Engineering Fair for her physics and astronomy project. She attends the Notre Dame College School, Welland, Ontario, Canada.
Zeyu Liu (b.1995) was awarded best of category and first place in the 2013 Intel International Science and Engineering Fair for his electrical and mechanical engineering project. He also received the European Union Contest for Young Scientists. He attends the Sir Winston Churchill High School, Calgary, Alberta, Canada.
Following the example of 1934 and 1935, there is no list of stars occulted by the moon in the present issue of the Handbook. The computations for Toronto and Ottawa, published in 1931, 1932, demanded much labour which seemed hardly warranted by the results attained. Our country extends over so many degrees of longitude that predictions for a single place are of limited use. The Editor would be glad to publish brief lists for well distributed stations and asks for suggestions.
In the present issue of the Handbook the list of stars occulted by the mo has been omitted, but any person who is able and willing to observe occultations will be supplied with the necessary information.