Gedeonov Dmitry Danilovich

(07(19).11.1854 11(24).09.1908)

Russian surveyor and astronomer.

Born in the city of Venev, Tula Province. His father, Daniil Gerasimovich, was the first caretaker of the Vyevsky Theological School and the first local historian of Venevsky district.

In 1871, Gedeonov graduated from the Polotsk Military Gymnasium, in 1874 - the Nikolaev Engineering School. He served as an officer in the 2nd sapper battalion.

From 1876 he studied at the geodesic department of the Academy of the General Staff; From 1878 to 1880, he practiced at the Pulkovo Observatory. In all spheres of astronomical and geodesic activity, where he had to work, he showed outstanding abilities. He improved geodesic and astronomical methods and tools. In the years 1881-1882. he performed leveling in Western Russia. They have developed recommendations for improving the accuracy of work, recommended a new method of leveling, proposed to connect the level with a telescope. According to his project, the WTO-II level was built with the price of dividing the level 2-7″ and increasing the telescope 35-40. Compiled new instructions for leveling with all the sources of errors. The instruction was issued in 1883 and operated for 20 years.

Participating in expeditions in the Transcaspian region, Khiva, Bukhara, while establishing the border with Afghanistan, in Turkish Armenia in 1884-1886 and 1889, Gideonov conducted extensive itinerary surveys with the definition of more than 70 astronomical reference points. In 1885 he was awarded the Prize of the Russian Geographical Society for astronomical definitions in the Transcaspian region.

In 1887 he was transferred to St. Petersburg to the post of assistant chief of the Geodetic Section of the Military topographic department. At the same time he taught topography and geodesy at the Military Topographical School. Since 1890, Gedeonov took the post of director of the Tashkent Observatory, since 1900 he is the head of the Turkestan Military topographic department.

In 1899, Gideonov organized an international latitudinal station in Chardzhui and systematic observations of the international program. He proposed a method for determining the clock corrections from observations of stars (the Gedeonov method); he drafted a small vertical circle with a diameter of 15 cm and a dividing price of 10′ (made by Repsold). He worked on gravimetric definitions of the Sternek three-pendulum device on five points of the Transcaucasus.

In 1903, Gedeonov installed in Tashkent the first rail comparator in Russia for the calibration of 24-meter wires of the Yederin basic device. With this device in 1903, he measured the Termez base, and in 1907, after the instrument was improved by the International Bureau of Weights and Measures in Sevres (France), Kazalinsky.

In 1905, Gedeonov was awarded another prize of the Russian Geographical Society and the FP Medal. Litke "for the totality of his long and extensive work in various areas of geodesy, topography and applied mathematics".

He died of typhoid fever in Tashkent, where he was buried.

Mountain range in the north of the Circapp Land, the island of Western Spitsbergen. The coordinates are 76° 52'N   16° 42.5' E.


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