Plaskett Report for April 1931

While the sunshine records for the locality are high for the month, the prevalence of smoke from forest fires due to the warm weather has spoiled many otherwise good nights so that observing conditions for the month were very poor. On 13 nights with 78.9 hours observing, 68 plates were secured as against a twelve-year average of 17 nights, 100.3 hours and 128 plates.

Approximately 793 persons visited the observatory during the month.

Director J.S. Plasket carried out computations for galactic rotation for certain stars and for interstellar matter whose motions have been determined from same stars. Perpared seminar talk and lecture. Handled usual correspondence and administrative duties.

Assistant Director W.W. Harper work 5 nights securing 35 plates. Measured for radial velocity 40. Comparing Victoria results for radial velocities with those of other observatories. Gave seminar talk. Silvered mirrors of telescope.

Astronomer J.A. Pearce observed 9 nights, obtaining 30 plates. Measure for wave lengths of metallic lines in late B type stars. Engaged in computations for Volume V, Number 3. Gave seminar talk and one address in city.

[Pearce was one of five speakers at a meeting on “Life in the Universe” before the Victoria Chapter of the RASC, Ed.]

See very endSee very end Wed, Apr 29, 1931 – 22 · Times Colonist (Victoria, British Columbia, Canada) ·

Astronomer C.S. Beals observed 1 night, obtaining 3 plates. Measured 25 plates on the Hartmann microphotometer and reduced the measures which were made for the purpose of studying the contours of Wolf Rayet bands. Gave 1 seminar talk.

Computer S.N. Hill remeasured and reduced for radial velocity 9 spectrograms of double lined binary star HD 35407. Worked on period of same. Reductions of engine readings and computations for constants and wave lengths. Preparation of drawings for slides and publications. Least-squares solution in connection with galactic rotation., solar motion and K term.

Clerk-Stenographer Miss L.M. Blake proof read Volume V, Numbers 1 and 2, Volume VI, Numbers 1 and 2. Prepared for printer Index Contents of Volume VI. Usual correspondence, accounts, envelopes, reports and typing of articles for publication.

Astronomical Assistant T.T. Hutchison assisted in observing on 13 nights. Detached mirrors from telescope silvering and replaced same. Kept telescope in running order,