Plaskett Report for March 1928

While a few good nights were experienced at the commencement of the month the clear weather was not maintained and an average much below the usual for the month resulted. On 14 nights 84 plates were secured with a total exposure time of 80.0 hours. The corresponding averages for a nine-year interval are 16 nights, 107.6 hours and 161 plates.

Approximately 600 persons visited the observatory.

Director J. S. Plaskett measured 6 spectrograms for radial velocity. Prepared lecture for publication. Discussing and obtaining final velocities of Bs with Mr. Pearce. Handled the usual correspondence and administrative work.

[Plaskett had a one and a half-page article in the March 10 edition of the Victoria Daily Times on the motions of the stars, Ed.]

Sat, Mar 10, 1928 – 27 · The Victoria Daily Times (Victoria, British Columbia, Canada) ·
Big article continuedBig article continued Sat, Mar 10, 1928 – 29 · The Victoria Daily Times (Victoria, British Columbia, Canada) ·
Assistant Director W. E. Harper worked 4 nights securing 36 spectra. Measured for radial velocity 13. Working on orbit of A Persei. Gave one seminar talk. Silvered both primary and secondary mirrors.

Astronomer J. A. Pearce observed on 5 nights, obtaining 39 plates. Measured 20 plates for radial velocity. Gave 1 seminar talk on “origin of Nebular Lines”.

Astronomer C. S. Beals observed 5 nights, obtaining  8 plates. Measured wave lengths of bright hydrogen lines in RR Bootis. Computed velocity reduction table for ISS camera. Completed measurement  of oxygen and nitrogen standard wave lengths in region 4300-4800. gave one seminar talk.

Astronomical Computer S. N. Hill spent time computing proper motion and position angle of proper motion vector. Library work. Applying Boss-Jenkins correction to proper motion computations.

Senior Clerk-Stenographer Miss L. M. Blake handled the usual correspondence, plates, accounts and library assistance. Typed addresses for publication; radio and seminar talks. Proof-reading Volume IV, Number 4.

Instrument Maker Foreman T. T. Hutchison assisted in observing on 7 nights. Some repairs were made to declination motor of telescope and revolving dome.