Plaskett Report for February 1930

The observing weather was somewhat below the average for the month, the rainfall being a couple of inches over the average. On 12 [nights, Ed.] with 85.4 hours observing, 66 plates were secured as against the eleven-year average for the month of 14 nights, 92.6 hours and 121 plates.

Approximately 393 persons visited the observatory during the month.

Director J. S. Plaskett measured 6 spectrograms for radial velocity. Computed masses and luminosities of O to B5 stars from data of spectroscopic binaries and gave discussion at seminar in preparation for George Darwin lecture. Usual administrative work and correspondence.

[During the month of February, Plaskett received word that he had been awarded the Rumford Prize by the American Academy of Arts and Sciences. It is one of the oldest scientific prizes in the United States. Note that the article below mistakenly calls it the Rumford Medal., Ed.]

Assistant Director W. E. Harper worked 3 nights securing 29 plates. Measured for radial velocity 40. Some time spent trying for periods of binaries. Gave one outside address and one seminar talk. Silvered main mirror.

Astronomer J. A. Pearce observed 2 nights, obtaining 12 plates. Worked on solutions for the solar motion, K term and galactic rotation of O and B stars. Gave one seminar talk. Radial Velocity Catalogue O and B stars.

Astronomer C. S. Beals worked 3 nights obtaining 9 plates. Measured 8 plates for radial velocity. Calibrated wedge for grating spectrograph in the visible region. Gave one seminar talk.

[Beals gave a talk to the Oaklands School Parent-teacher Association on February 3, 1930, Ed.]

Sat, Feb 1, 1930 – 6 · Times Colonist (Victoria, British Columbia, Canada) ·

Astronomer R. O. Redman prepared K star results for publication. Commenced further computations on Y Cygni. Worked 4 nights and obtained 16 plates.

Computer S. N. Hill measured and reduced for radial velocity 9 B type spectra. Computations – least squares solution, rotation of galaxy. Compilation on B and O type star catalogue. Work on period of binary star HD 185936

Clerk-Stenographer Miss L. M. Blake handled the reports, accounts and envelopes for spectra. Correspondence and typing of various lectures and addresses for various members of staff. Newspaper articles, RASC.

Astronomical Assistant T. T. Hutchison assisted in observing on 9½ nights. Renewed broken trolley flange on dome and kept instrument in running condition.