Pickering , Edward Charles
(1846–1919) American astronomer
Born in Boston, Massachusetts, Pickering graduated from Harvard in 1865. He taught physics at the Massachusetts Institute of Technology before becoming professor of astronomy and director of the observatory at Harvard in 1876, remaining there until his death in 1919.
Pickering made innovations in spectrography. Instead of placing a small prism at the focus to capture the light of a single star, he put a large prism in front of the objective, obtaining at the same time a spectrogram of all the stars in the field sufficiently bright to affect the emulsion. This made possible the massive surveys he wanted to organize and enabled the publication in 1918 of theHenry Draper Catalogue, compiled by Annie Cannon, giving the spectral types of 225,300 stars. The other innovation in instruments due to him was the meridian photometer introduced in 1880. In this, images of stars near the meridian would be reflected at the same time as the image of Polaris. The brightness could then be equalized and as the brightness of Polaris was known, that of the meridian stars could easily be calculated. More than a million observations with such instruments permitted the compilation of the Harvard catalog giving the magnitude of some 50,000 stars. He was able to include stars of the southern hemisphere in this catalog, for in 1891 he had established an observatory in Arequipa, Peru, with the help of his brother William Henry Pickering.
One further improvement due to Edward Pickering was his introduction, around 1900, of the alphabetic system of spectral classes.

Scientists. . 2011.

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  • Pickering,Edward Charles — Pick·er·ing (pĭkʹər ĭng), Edward Charles. 1846 1919. American astronomer noted for his work on stellar photometry. His brother William Henry Pickering (1858 1938) discovered Phoebe, the ninth moon of Saturn (1899), and predicted the existence of… …   Universalium

  • Pickering, Edward Charles — ▪ American physicist and astronomer born July 19, 1846, Boston died Feb. 3, 1919, Cambridge, Mass., U.S.       U.S. physicist and astronomer who introduced the use of the meridian photometer to measure the magnitude of stars and established the… …   Universalium

  • Edward Charles Pickering — Saltar a navegación, búsqueda Edward Charles Pickering Edward Charles Pickering (Boston (Massachusetts), 19 de julio de 1846 Cambridge (Massachusetts), 3 de febrero de 1919 …   Wikipedia Español

  • Edward Charles Pickering — (* 19. Juli 1846 in Boston; † 3. Februar 1919 in Cambridge, Massachusetts) war ein amerikanischer Astronom und Physiker, Bruder von William Henry Pickering. Zusammen mit Hermann Karl Vogel e …   Deutsch Wikipedia

  • Edward Charles Pickering — Pour les articles homonymes, voir Pickering (homonymie). Edward Charles Pickering Edward Charles Pickering (19 juillet 1846 …   Wikipédia en Français

  • Edward Charles Pickering — Infobox Scientist name = Edward Charles Pickering box width = image width =150px caption = Edward Charles Pickering birth date = July 19 1846 birth place = death date = February 3 1919 death place = residence = citizenship = nationality =… …   Wikipedia

  • Пикеринг Edward Charles — (Pickering, род. в 1846 г:) выдающийся современный астроном. В 1867 г. назначен профессором физики в бостонском университете; там он основал превосходную лабораторию, первую в Америке, и занимался главным образом исследованиями по оптике. В 1877… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

  • Edward C. Pickering — Edward Charles Pickering Edward Charles Pickering Edward Charles Pickering, né à Boston le 19 juillet 1846 et mort à Cambridge (Massachusetts) le 3 février 1919, est un astronome et physicien américain, frère d …   Wikipédia en Français

  • Edward Pickering — Edward Charles Pickering Edward Charles Pickering Edward Charles Pickering, né à Boston le 19 juillet 1846 et mort à Cambridge (Massachusetts) le 3 février 1919, est un astronome et physicien américain, frère d …   Wikipédia en Français

  • Charles Pickering — Edward Charles Pickering Edward Charles Pickering Edward Charles Pickering, né à Boston le 19 juillet 1846 et mort à Cambridge (Massachusetts) le 3 février 1919, est un astronome et physicien américain, frère d …   Wikipédia en Français

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