Annie Jump Cannon and Henry Draper Catalogue

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Difference between Annie Jump Cannon and Henry Draper Catalogue

Annie Jump Cannon vs. Henry Draper Catalogue

Annie Jump Cannon (December 11, 1863 – April 13, 1941) was an American astronomer whose cataloging work was instrumental in the development of contemporary stellar classification. The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.

Antonia Maury

Antonia Maury (March 21, 1866 – January 8, 1952) was an American astronomer who published an important early catalog of stellar spectra.

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Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

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Centre de données astronomiques de Strasbourg

The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.

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Edward Charles Pickering

Prof Edward Charles Pickering FRS(For) HFRSE (July 19, 1846 – February 3, 1919) was an American astronomer and physicist and the older brother to William Henry Pickering.

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Harvard College Observatory

The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.

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Henry Draper

Henry Draper (March 7, 1837 – November 20, 1882) was an American doctor and amateur astronomer.

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Photographic magnitude

Before the advent of photometers which accurately measure the brightness of astronomical objects, the apparent magnitude of an object was obtained by taking a picture of it with a camera.

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Southern Hemisphere

The Southern Hemisphere is the half of Earth that is south of the Equator.

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Spectroscopy

Spectroscopy is the study of the interaction between matter and electromagnetic radiation.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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Williamina Fleming

Williamina Paton Stevens Fleming (May 15, 1857 – May 21, 1911) was a Scottish-American astronomer.

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