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

2000 ◽  
Vol 178 ◽  
pp. 163-168 ◽  
Author(s):  
Sh.A. Ehgamberdiev ◽  
S.K. Eshonkulov ◽  
E.A. Litvinenko
Keyword(s):  
Data Center ◽  
Satellite Tracking ◽  
Astronomical Observatory ◽  
Astronomical Institute ◽  
Tracking Systems ◽  
Uzbek Academy ◽  
Pulkovo Observatory ◽  
Latitude Station ◽  
Daily Frequency ◽  
Academy Of Sciences

AbstractThe 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.

scholarly journals FON DUSHANBE CATALOGUE. RESULTS OF PROCESSING IN THE TYCHO-2 SYSTEM

2021 ◽  
Vol 34 ◽  
pp. 106-109
Author(s):  
G. Kokhirova ◽  
H. Relke ◽  
Q. Yuldoshev ◽  
Yu.I. Protsyuk ◽  
V.M. Andruk
Keyword(s):  
Northern Hemisphere ◽  
Astronomical Observatory ◽  
Astronomical Institute ◽  
National Academy Of Sciences ◽  
Main Astronomical Observatory ◽  
Digitized Images ◽  
Academy Of Sciences ◽  
M 14 ◽  
Research Institute

In the Tycho-2 catalogue system the processing of 1529 photographic plates of the FON Dushanbe project from the collection of the Institute of Astrophysics of the National Academy of Sciences of Tajikistan was completed. The photographic plates with the size of 8º×8º (30x30 cm) were exposed in the zones from -8º to + 84º in the period of 1985-1992 years. In years 2017 – 2020 the plates were digitized using a Microtek ScanMaker 1000XL Plus scanner with the resolution of 1200 dpi, so the size of the digitized images is near 13000x13000 px. Based on the results of the processing of digitized images a catalogue of equatorial coordinates α, δ and B-magnitudes of stars for the northern hemisphere of the sky was created. The catalog contains about 30 million stars and galaxies for the epoch 1988.74. The average internal accuracy of the catalogue for all objects is σαδ = ±0.32" and σB = ± 0.11 m (for stars in the range of B = 8 m -14 m the errors are σαδ = ±0.19" and σB =±0.07 m ) for equatorial coordinates and B-magnitudes respectively. The convergence between calculated and reference positions from the Tycho-2 catalogue is σαδ = ±0.07" and the convergence with photoelectric B-magnitudes is σB = ±0.16 m . Five astronomical institutions took part in the processing of the photographic plates and in the creating of the FON-Dushanbe catalogue: Institute of Astrophysics of NAS of Tajikistan; Walter Hohmann Observatory, Essen, Germany; Ulugh Beg Astronomical Institute UAS, Uzbekistan; Research Institute “Mykolaiv Astronomical Observatory”, Ukraine and Main Astronomical Observatory NASU, Ukraine.

Alexander Nikolaevich Deutsch on the occasion of his 120th anniversary

2020 ◽  
pp. 45-58
Author(s):  
M.A PETROVA ◽  
N.A SHAKHT
Keyword(s):  
Astronomical Observatory ◽  
State University ◽  
Astronomical Institute ◽  
Stellar Astronomy ◽  
Sternberg Astronomical Institute ◽  
Great Patriotic War ◽  
Mathematical Sciences ◽  
Academy Of Sciences ◽  
Moscow State University ◽  
120Th Anniversary

The year 2019 is the year of the 120th anniversary of Alexander Nikolaevich Deutsch (1899-1986), the Pulkovo astronomer, doctor of physical and mathematical Sciences, Professor, who for many years was the head of the Department of photographic astrometry and stellar astronomy of the Main Astronomical Observatory, Russian Academy of Sciences (GAO RAS), the supervisor and teacher of several generations of Pulkovo astronomers and employees of other observatories. This article presents the scientific and social activities of A.N. Deutsch. Archived data is provided that evidence his participation, along with other Pulkovo employees, in the salvation of the property and scientific Fund of the Pulkovo Observatory during the great Patriotic war, as well as in the work to restore the Observatory. The article is based on the presentation given to and approved by the conference "Astrometry: yesterday, today, tomorrow" (Sternberg Astronomical Institute, Moscow State University, October 14-16, 2019).

scholarly journals A 100-Year Astronomical-Data Bank: Collaboration Possibilities and Some Problems

2001 ◽  
Vol 24 (3) ◽  
pp. 233-233
Author(s):  
Salakhutdin N. Nuritdinov
Keyword(s):  
Milky Way ◽  
Data Bank ◽  
List Type ◽  
Type Number ◽  
Uzbek Academy ◽  
Astronomical Data ◽  
Research Complex ◽  
Galactic Astronomy ◽  
Academy Of Sciences ◽  
Working Out

Our Department of Galactic astronomy and Cosmogony of the Astronomical Institude of Uzbek Academy of Sciences has rich photo meterials obtained over more than 100 years by two telescopes (Normal Astrograph with F= 3500 mm, D= 330 mm and Zeiss Double Astrograph with F= 3000 mm, D= 400 mm). The main objects studied are: 1Open and Globular star clusters,2Regions of the Milky Way and the Pulkovo Observatory program.3Comets and Asteroids4Planets and their Satellites.There are also astronomical data received in the framework of a number of International programmes. Now we are working out some research-complex programmes of these objects. We are ready to collaborate on these programmes.

scholarly journals Catalogue of the Rozhen Observatory Schmidt Telescope

1994 ◽  
Vol 161 ◽  
pp. 377-379
Author(s):  
A. Mutafov ◽  
P. Ilcheva ◽  
M. Kusheva ◽  
M. Michailov ◽  
Z. Borisov ◽  
...  
Keyword(s):  
Astronomical Observatory ◽  
Schmidt Telescope ◽  
Bulgarian Academy ◽  
Machine Readable ◽  
Academy Of Sciences

We present the results from the analysis of the machine-readable version of the log book for the 50/70 cm Schmidt telescope of the National Astronomical Observatory (NAO) Rozhen of the Bulgarian Academy of Sciences. The telescope began operating in 1979, after it was repaired and transferred from the Potsdam Observatory where it had operated since 1952.

scholarly journals Complex Geodynamical Investigations in the Area of the USSR Academy of Sciences Central Astronomical Observatory at Pulkovo

1990 ◽  
Vol 141 ◽  
pp. 72-72
Author(s):  
V. K. Abalakin ◽  
V. I. Bogdanov ◽  
Yu.D. Boulanger ◽  
V. A. Naumov
Keyword(s):  
Coordinate System ◽  
Ussr Academy ◽  
Astronomical Observatory ◽  
Coordinate Systems ◽  
Inertial Coordinate System ◽  
Gravitation Field ◽  
Practical Applications ◽  
Star Catalogue ◽  
Academy Of Sciences

For astronomical, geodetical and geodynamical investigations as well as for practical applications the inertial coordinate system is widely used which is based on the Fundamental Star Catalogue FK5 together with local coordinate systems in observation stations on the Earth's surface which are intrinsically connected with the geometry of the gravitation field.

Iterative trajectory learning for highly accurate optical satellite tracking systems

2019 ◽  
Vol 164 ◽  
pp. 121-129 ◽  
Author(s):  
Thomas Riel ◽  
Andreas Sinn ◽  
Christian Schwaer ◽  
Martin Ploner ◽  
Georg Schitter
Keyword(s):  
Satellite Tracking ◽  
Tracking Systems ◽  
Trajectory Learning

scholarly journals Period Changes and Mass Loss Rates in 34 RS CVn-Type Binaries

1980 ◽  
Vol 88 ◽  
pp. 383-387 ◽  
Author(s):  
Douglas S. Hall ◽  
Jerzy M. Kreiner ◽  
Steven N. Shore
Keyword(s):  
Light Curve ◽  
Mass Loss ◽  
Least Squares ◽  
Weighted Least Squares ◽  
Astronomical Observatory ◽  
Astronomical Institute ◽  
Long Period ◽  
Sternberg Astronomical Institute ◽  
Short Period

We have collected all available times of minimum, over 1650, for 23 regular, 7 short-period, and 4 long-period eclipsing RS CVn binaries using the card catalogues at the Sternberg Astronomical Institute and the Krakow Astronomical Observatory, as well as unpublished data. We examined them critically, discarded those grossly in error, and assigned weights. For AD Cap, RV Lib, and ε UMi there are virtually no data. For the remaining 31 we determined quadratic ephemerides by weighted least squares. Values of d1nP/dt are given in the Table with their errors. Roughly 2/3 are variable at greater than the 2 σ level. Significant decreases outnumber significant increases by almost 2:1. We show that light curve asymmetry produced by the distortion wave probably accounts for the relatively small, rapid fluctuations in the O-C curve but not the long-term period changes.

scholarly journals Closing Remarks

2011 ◽  
Vol 7 (S282) ◽  
pp. 564-564
Author(s):  
Mercedes T. Richards
Keyword(s):  
Slovak Academy ◽  
Astronomical Institute ◽  
The World ◽  
Visual Support ◽  
Academy Of Sciences

The conference organizers are grateful to everyone who came, from all parts of the world, to share this experience with us. There were one hundred and seventy-seven participants from thirty-one countries. We thank the speakers, session chairs, distinguished panelists, the SOC members, the LOC members led by Theo Pribulla and Laco Hric, and Aleš Kucera, Director of the Astronomical Institute of the Slovak Academy of Sciences. Special thanks go to Richard Komžík for ensuring the smooth operation of the computer and audio-visual support for the conference.

scholarly journals EARLY KYIV OBSERVATIONS OF ASTEROIDS: ANALYSIS AND NEW REDUCTION WITH TYCHO-2 AND GAIA CATALOGS

2021 ◽  
Vol 34 ◽  
pp. 114-118
Author(s):  
S.V. Shatokhina ◽  
L.V. Kazantseva
Keyword(s):  
High Accuracy ◽  
Astronomical Observatory ◽  
National Academy Of Sciences ◽  
Positional Accuracy ◽  
Comparison Results ◽  
National University ◽  
Random Components ◽  
Academy Of Sciences ◽  
Positional Data ◽  
Gaia Dr2

For more than 50 years, the continuous photographic observations of asteroids have been carried outwith telescopes of the Astronomical Observatory of the Taras Shevchenko National University of Kyiv and the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. About 3,000 photographic plates were obtained, some of which were exposed in 1908. We collected the data on more than 5,500 positions and magnitudes of asteroids on these astroplates taking into account all results of the processing of observations available in various publications and in the Minor Planet Center database. All positional data were compared with JPL ephemeris and analyzed. From different series of asteroid observations the values of positional accuracy were obtained, depending on the methods of measuring and processing the plates and reference catalogs of stars. In order to systematically improve the obtained asteroid positions, we evaluated the possibilities of reprocessing some of the earliest asteroid observations applying the modern star high accuracy catalogs. Using the Tycho-2, Gaia DR2, and Gaia EDR3 as the reference catalogs, the 590 astroplates exposed on the MAO NASU Double Long-Focus Astrograph (DLA) in 1952-1986 were reprocessed based on old plate measurements. All newly determined and previous original asteroid positions were compared with the JPL ephemeris. The comparison results show an improvement in the systematic and random components of the accuracy of coordinates for new positions of asteroids. When comparing the new positions of the asteroids  determined in the Tycho-2 and Gaia catalog systems, no significant changes in accuracy were found.

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