Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jahh...13..127j&link_type=abstract
Journal of Astronomical History and Heritage (ISSN 1440-2807), Vol. 13, No. 2, p. 127 - 138 (2010).
Astronomy and Astrophysics
Astrophysics
Spectroscopy, Radial Velocities, J.S. Plaskett, Lick Observatory, Mount Wilson Observatory, Dominion Astrophysical Observatory
Scientific paper
In the early twentieth century, cooperative astronomical programmes were not new: the Carte du Ciel project involved nearly twenty observatories. G.E. Hale's International Union for Cooperation in Solar Research, forerunner of the IAU, was organized in 1904. At the 1910 meeting of the American Astronomical Society, W.W. Campbell proposed to create a committee to foster cooperation in radial-velocity measurements. At the Pasadena meeting of the IUCSR, a scheme to pursue measurements of fainter stars emerged. Few observatories had telescopes sufficiently powerful for the work, the new 60-inch reflector at Mount Wilson being one of the exceptions. J.S. Plaskett, of the Dominion Observatory in Ottawa, brought into this group, determined that Canada would contribute. He was central to the eventual cooperative work in the 1920s and it was his 72-inch reflector at Victoria that became the template for a number of similar telescopes which would make significant contributions to stellar spectroscopy over the next forty years.
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