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George Ellery Hale (June 29, 1868 – February 21, 1938) was an American astrophysicist, best known for his discovery of magnetic fields in sunspots, and as the leader or key figure in the planning or construction of several world-leading telescopes; namely, the 40-inch refracting telescope at Yerkes Observatory, 60-inch Hale reflecting telescope at Mount Wilson Observatory, 100-inch Hooker ...
The Kenwood Astrophysical Observatory was the personal observatory of George Ellery Hale, constructed by his father, William E. Hale, in 1890 at the family home in the Kenwood section of Chicago. [1] It was here that the spectroheliograph , which Hale had invented while attending MIT , was first put to practical use; and it was here that Hale ...
1892 – George Ellery Hale finishes a spectroheliograph, which allows the Sun to be photographed in the light of one element only; 1897 – Alvan Clark finishes the Yerkes 40-inch (1.0 m) optical refracting telescope, located in Williams Bay, Wisconsin
It was developed independently by George Ellery Hale and Henri-Alexandre Deslandres in the 1890s [1] and further refined in 1932 by Robert R. McMath to take motion pictures. The instrument comprises a prism or diffraction grating and a narrow slit that passes a single wavelength (a monochromator ).
The observatory, often called "the birthplace of modern astrophysics", was founded in 1892 by astronomer George Ellery Hale and financed by businessman Charles T. Yerkes. It represented a shift in the thinking about observatories, from their being mere housing for telescopes and observers, to the early-20th-century concept of observation ...
George Ellery Hale: 1868–1938 US Frederick James Hargreaves: 1891–1970 England ... George N. Saegmuller: 1847–1934 US Bernhard Schmidt: 1879–1935 Germany
Dr. George Ellery Hale and Dr. Henri Deslandres both developed the spectroheliograph—independently—to study the Sun in different wavelengths of light related to specific atoms. Dr. Robert R. McMath of the McMath–Hulbert Observatory used a spectroheliograph to make time-lapse films of the prominences on the Sun.
A spectrohelioscope is a type of solar telescope designed by George Ellery Hale in 1924 to allow the Sun to be viewed in a selected wavelength of light. The name comes from Latin- and Greek-based words: "Spectro," referring to the optical spectrum, "helio," referring to the Sun, and "scope," as in telescope.