Progress in the Realization of the Project Fon-Dushanbe Catalogue

Mullo-Abdolov, A. Sh.; Relke, H.; Кохирова, Г. И.; Yuldoshev, Q.; Protsyuk, Yu. I.; Andruk, V. M.

doi:10.18524/1810-4215.2018.31.144606

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…The digitizing options used a resolution of 1200 dpi with 16-bit gray levels. The first results of this work were published by Mullo-Abdolov [8,9].…”

Section: Methodsmentioning

confidence: 92%

Asteroid Positions Based on the Dushanbe Part of the Fon Project Observations

SHATOKHINA,

RELKE,

YIZHAKEVYCH

et al. 2023

Kosm. nauka tehnol.

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We present the results of asteroid images’ identification and creation of positional catalogs based on digitized photographic observations within the framework of the Northern Sky Survey (FON project). Namely, the cooperation between the Ukrainian Virtual Observatory and the Institute of Astrophysics of the Academy of Sciences of Tajikistan makes it possible to expand this work by involving numerous additional archives of digitized observations and processing services to obtain new original data about the small Solar system bodies. The Dushanbe part of the FON project is represented by about 1570 photographic plates obtained in 1985—1992 at the Gissar As- tronomical Observatory of the Institute of Astrophysics of the Academy of Sciences of Tajikistan. To the moment, their digitization and further scanning processing were completed, and a catalog of equatorial coordinates and stellar magnitudes for all registered objects on the plates was created. In parallel with solving the main task of the project to create a catalog of stars and galaxies, we analyzed the results of processing the plates to search for images of asteroids and comets and to create a catalog of their coordinates and magnitudes. More than 2200 positions of asteroids and comets were obtained with visual magnitudes from 7m to 16.5 m. All positions of the asteroids were compared with the ephemeris. A preliminary analysis of the O-C differences and their comparison with similar results obtained from the digitized observations of the Kyiv and Kitab parts of the FON project are conducted. The authors note some differences in the accuracy of the compared catalogs and also analyze the reasons for this and the possibilities of reducing their impact. In addition, the catalog includes several positions of Pluto and comets that were also identified in the negatives.

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“…The digitizing options used a resolution of 1200 dpi with 16-bit gray levels. The first results of this work were published by Mullo-Abdolov [8,9].…”

Section: Methodsmentioning

confidence: 92%

Asteroid Positions Based on the Dushanbe Part of the Fon Project Observations

SHATOKHINA,

RELKE,

YIZHAKEVYCH

et al. 2023

Kosm. nauka tehnol.

Self Cite

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Astrometry and photometry of digitized plates of Baldone Schmidt telescope

Eglitis

Andruk

2021

Open Astronomy

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During the 40-year photographic period of astronomical observations, the Baldone Astrophysical Observatory has accumulated more than 22,000 direct and 2,500 spectral images. In 2018, the digitization of direct astrophoto images with a resolution of 1200 dpi was completed. A processing methodology for obtaining the equatorial coordinates and photometric characteristics of the objects recorded in digitized astronegatives using the LINUX/MIDAS/ROMAFOT environment has been developed at the Main Astronomical Observatory of the National Academy of Sciences of Ukraine. Program package with success already works in seven observatories. A description of the operation of this program complex in stages and analysis of the obtained results is given. The steps describe the astrometric and photometric reduction process of digital records, as well as the reduction of the obtained instrumental magnitudes to the Johnson UBVR photometric system. The methodology of characteristic curve construction in the case of one exposure is described in detail. From all digitized astrophotoplates to date Approximately 2200 V film negatives, 300 U plates and several R, B plates were processed. As a result, catalogs of the positions and magnitudes of Pluto, 1848 asteroids and comets were obtained. 31 new positions were recorded in the VizieR Pluto catalog VI/155. It was found that the root-mean-square errors of the reduction of the measured coordinates to the equatorial coordinate system of the Tycho-2 catalog have values σ RA , DEC = 0.1-0.2”, and the root-mean-square errors of the reduction of instrumental photometric quantities m to the Johnson system of stellar UBVR-values are also in within σ UBVR = 0.1 − 0.2 m .

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Progress in the Realization of the Project Fon-Dushanbe Catalogue

Cited by 2 publications

References 9 publications

Asteroid Positions Based on the Dushanbe Part of the Fon Project Observations

Asteroid Positions Based on the Dushanbe Part of the Fon Project Observations

Astrometry and photometry of digitized plates of Baldone Schmidt telescope

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