Maximilian Franz Joseph Cornelius Wolf was a German astronomer and a pioneer in the field of astrophotography. He was the chairman of astronomy at the University of Heidelberg and director of the Heidelberg-Königstuhl State Observatory from 1902 until his death in 1932.
Fred Lawrence Whipple was an American astronomer, who worked at the Harvard College Observatory for more than 70 years. Amongst his achievements were asteroid and comet discoveries, the "dirty snowball" hypothesis of comets, and the invention of the Whipple shield.
Daniel Stefanus du Toit (1917–1981) was a South African astronomer.
Charles Dillon Perrine was an American astronomer at the Lick Observatory in California (1893-1909) who moved to Cordoba, Argentina to accept the position of Director of the Argentine National Observatory (1909-1936). The Cordoba Observatory under Perrine's direction made the first attempts to prove Einstein's theory of relativity by astronomical observation of the deflection of starlight near the Sun during the solar eclipse of October 10, 1912 in Cristina (Brazil), and the solar eclipse of August 21, 1914 at Feodosia, Crimea, Russian Empire. Rain in 1912 and clouds in 1914 prevented results.
William Robert Brooks was a British-born American astronomer, mainly noted as being one of the most prolific discoverers of new comets of all time, second only to Jean-Louis Pons.
Zhang Yuzhe, also known as Yu-Che Chang, was a Chinese astronomer and director of the Purple Mountain Observatory who is widely regarded as the father of modern Chinese astronomy. He studied the light curves of asteroids, and thus their rotation periods. He also researched the variable star CZ Cassiopeiae and the evolution of the orbit of Comet Halley. Zhang discovered three comets and is credited under the name Y. C. Chang by the Minor Planet Center for the discovery of one minor planet, the outer main-belt asteroid 3789 Zhongguo.
George A. Van Biesbroeck was a Belgian–American astronomer. He worked at observatories in Belgium, Germany and the United States. He specialized in the observation of double stars, asteroids and comets. He is notable for his long career as an observational astronomer.
George Ellery Hale 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 reflecting telescope at Mount Wilson, and the 200-inch Hale reflecting telescope at Palomar Observatory. He played a key role in the foundation of the International Union for Cooperation in Solar Research and the National Research Council, and in developing the California Institute of Technology into a leading research university.
The Astronomical Society of the Pacific (ASP) is an American scientific and educational organization, founded in San Francisco on February 7, 1889, immediately following the solar eclipse of January 1, 1889. Its name derives from its origins on the Pacific Coast, but today it has members all over the country and the world. It has the legal status of a nonprofit organization.
The Perth Observatory is the name of two astronomical observatories located in Western Australia (WA). In 1896, the original observatory was founded in West Perth on Mount Eliza overlooking the city of Perth. Due to the city's expansion, the observatory moved to Bickley in 1965. The new Perth Observatory is sometimes referred to as Bickley Observatory.
The British Astronomical Association (BAA) was formed in 1890 as a national body to support the UK's amateur astronomers.
Comet Morehouse (modern formal designation: C/1908 R1) was a bright, non-periodic comet discovered by US astronomer Daniel Walter Morehouse and first observed on September 1, 1908, at Yerkes Observatory in Williams Bay, Wisconsin. Morehouse was a graduate student at the time. It was unusual in the rapid variations seen in the structure of its tail. At times, the tail seemed to split into up to six separate tails; at others, the tail appeared completely detached from the head of the comet. The tail was further unusual in that it formed while the comet was still 2 AU away from the Sun (where distances of 1.5 AU are more usual), and that there was a high concentration of the CO+ ion in its spectrum.
Krisztián Sárneczky is a Hungarian teacher of geography and prolific discoverer of minor planets and supernovae, researching at Konkoly Observatory in Budapest, Hungary. He is a board member of the Hungarian Astronomical Association (HAA) and member of the American Association of Variable Star Observers, leader of the Comet Section of the HAA, and is a contributor in the editorial work of Hungarian Astronomical Almanach.
The University of Illinois Astronomical Observatory, located at 901 S. Mathews Avenue in Urbana, Illinois, on the campus of the University of Illinois Urbana–Champaign, was built in 1896, and was designed by Charles A. Gunn. It was listed on the National Register of Historic Places on November 6, 1986, and on December 20, 1989, was designated a National Historic Landmark.
Manali Kallat Vainu Bappu was an Indian astronomer and president of the International Astronomical Union. Bappu helped to establish several astronomical institutions in India, including the Vainu Bappu Observatory which is named after him, and he also contributed to the establishment of the modern Indian Institute of Astrophysics. In 1957, he discovered the Wilson–Bappu effect jointly with American astronomer Olin Chaddock Wilson.
Nizamia observatory is an optical observatory built by Nawab Zafar Jung Bahadur member of the House of Paigah and Amir of the Khurshid Jahi estate and established by Mahbub Ali Khan, Asaf Jah VI - the 6th Nizam of Kingdom of Hyderabad in 1901. It participated in the Carte du Ciel making 463,542 observations. It boasted of an 8" Cooke Astrograph and a 15" Grubb refractor telescope.
The Valz Prize(Prix Valz) was awarded by the French Academy of Sciences, from 1877 through 1970, to honor advances in astronomy.
The Drake Municipal Observatory is an astronomical observatory in Des Moines, Iowa. It is jointly operated by Drake University and the city of Des Moines, and is located within the Waveland Golf Course between the 17th green and the 18th tee. The observatory presents public programs on Friday nights throughout the spring through autumn months and, weather permitting, attendees can observe celestial objects with a variety of telescopes.
Konstantin Dorimedontovich Pokrovsky was a Soviet astronomer, corresponding member of the Academy of Sciences of the Soviet Union, and Professor. He was a rector of the Perm Branch of the Imperial Petrograd University (1916–1917), and the first rector of Perm State University (1917–1918).
Ferdinand Ellerman was an American astronomer and photographer. He spent a good part of his career as an associate of the solar astronomer George E. Hale, and is known for his study of a phenomenon in the solar chromosphere later dubbed Ellerman bombs.
