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Kitab as One of the Five Stations of the ILS: History and Present

Published online by Cambridge University Press:  12 April 2016

Sh.A. Ehgamberdiev ,
S.K. Eshonkulov  and
E.A. Litvinenko
Sh.A. Ehgamberdiev
Affiliation:
Ulugh Beg Astronomical Institute of the Uzbek Academy of Sciences Astronomicheskaya 33, 700052 Tashkent, Uzbekistane-mail:[email protected]
S.K. Eshonkulov
Affiliation:
Ulugh Beg Astronomical Institute of the Uzbek Academy of Sciences Astronomicheskaya 33, 700052 Tashkent, Uzbekistane-mail:[email protected]
E.A. Litvinenko
Affiliation:
Ulugh Beg Astronomical Institute of the Uzbek Academy of Sciences Astronomicheskaya 33, 700052 Tashkent, Uzbekistane-mail:[email protected]

Abstract

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The Tashkent Astronomical Observatory (Ulugh Beg Astronomical Institute of the Uzbek Academy of Sciences since 1966) was involved to the International Latitude Service (ILS) in September 1899, when the regular latitude measurements were started at Tschardjui (ϕ = +39°08′11″,λ = −63°29′). Because of the Civil War in Central Asia, the latitude observations were ended at Tschardjui in May, 1919. A new latitude station was established at Kitab (Uzbekistan) at latitude ϕ = +39°08′40″ and longitude λ= −66°53′, in November 1930. The Kitab Latitude Station was equipped with two visual zenith telescopes (1929, 1957) and the photographic zenith tube removed from the Pulkovo observatory in 1978. The Kitab station provided the ILS with more than 250000 instantaneous latitude measurements. Since the early 90s Kitab has hosted the ground-based beacons of GPS, PRARE and DORIS satellite tracking systems, providing the IERS data center with precise coordinates at sub daily frequency.

Type
Part 2. History of the International Latitude Service, Bureau International de l’Heure, International Earth Rotation Service and Polar Motion Applications
Information
International Astronomical Union Colloquium , Volume 178: Polar Motion: Historical and Scientific Problems , 2000 , pp. 163 - 168
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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