Fast Coordinate Cross-Match Tool for Large Astronomical Catalogue

Akhmetov, V. S.; Dmytrenko, Artem; Khlamov, Sergii

doi:10.1109/stc-csit.2018.8526759

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…These data and proposed method are very helpful in the process of creating the high-density astrometric and photometric catalogue in the modern big data surveys. For created a high-density reference frame the new reduction data of the SuperCOSMOS was used [17] as well as an especial tool for the cross-match [18].…”

Section: Reduction Of Supercosmos Datamentioning

confidence: 99%

New algorithm for astrometric reduction of the wide-field images

Akhmetov

Khlamov

Khramtsov

et al. 2019

2019 IEEE 14th International Conference on Computer Sciences and Information Technologies (CSIT)

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In this paper we presented the modified algorithm for astrometric reduction of the wide-field images. This algorithm is based on the iterative using of the method of ordinary least squares (OLS) and statistical Student t-criterion. The proposed algorithm provides the automatic selection of the most probabilistic reduction model. This approach allows eliminating almost all systematic errors that are caused by imperfections in the optical system of modern large telescopes.

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Section: Reduction Of Supercosmos Datamentioning

confidence: 99%

New algorithm for astrometric reduction of the wide-field images

Akhmetov

Khlamov

Khramtsov

et al. 2019

2019 IEEE 14th International Conference on Computer Sciences and Information Technologies (CSIT)

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“…The second step of cross-identification was a simple cross-match: each object of the PMA catalogue was compared with the object of the FON-KIEV, FON-KITAB, FON-DUSHANBE catalogues with circular window size of 1.5 arcsec by means of special software (Akhmetov et al, 2018). Then corresponded proper motion of PMA objects was compared with the objects from FON catalogues.…”

Section: Cross-identification Of Objectsmentioning

confidence: 99%

The Catalogues Analysis of Stars Equatorial Coor-Dinates and B-Magnitude of the Fon Project

Akhmetov

Khlamov

Andruk

et al. 2018

OAP

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FON project was expected a catalogue of stellar positions and B magnitude of Northern sky from combination six astronomical observatories of the former USSR were equipped with the same wide-angle astrographs: Goloseevo (Ukraine), Zvenigorod, Zelenchuk (Russia), Abastumani (Georgia), Kitab (Uzbekistan) and Hi-sorAO (Tajikistan). This paper has been presented the comparison results of three catalogues (FON-KIEV, FON-KITAB and FON-DUSHANBE) were received as result of scanning and astrometric reduction of photographic plates in the coordinate system of Tycho-2 catalogue. The data of zero zone (from-2 to 2 degrees of declination) from the mentioned catalogues was used during the research. The number of common objects after cross-match of catalogues with a circular search window equals to 1.5 arc seconds was more than 500 thousands. The estimation of random accuracy of stars positions from the mentioned catalogues was performed by the Wielen method. Final dispersions were calculated for every sub-range of magnitudes. The stars with individual differences of position and magnitude that exceed three standard deviations were rejected. The data from catalogues РМА was used for estimation of the systematic errors. It is obvious that the internal estimates of position accuracy of stars in the compared catalogues are low in one or all catalogues, and additional research is required. Analysis of the behavior of the systematic differences and standard deviations of the stellar positions of these catalogues have shown that there are a big values reaching 1 arcsec only in small sky regions. However, the internal estimation of accuracy that presented in catalogues is well matched with the systematic differences and standard deviations in the other sky regions.

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