Processing results of digitized photographic observations of Pluto from the collections of the Ukrainian Virtual Observatory

Kazantseva, L. V.; Shatokhina, S. V.; Protsyuk, Yu. I.; Kovylianska, O. E.; Andruk, V. M.

doi:10.3103/s0884591315010031

Cited by 30 publications

(18 citation statements)

References 17 publications

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“…The results are based on the software developed in the MIDAS/ROMAFOT environment (Andruk et al, ,b,c, 2016aEglitis et al, 2016a,b;Kazantseva et al, 2015;Yizhakevych et al, 2016;Pakuliak et al, 2016). Figure 6 shows a map of the star-sky section of the double cluster χ and h of Perseus based on the processing of plate No.…”

Section: Discussionmentioning

confidence: 99%

“…At the same time, another application was developed in FORTRAN language and successfully used this software to determine the equatorial coordinates and photometric magnitudes of stars, galaxies, satellites of large planets, asteroids and other objects (Andruk and Pakuliak, 2007;Golovnya et al, 2010;Andruk et al, 2010Andruk et al, , 2015c. Nowadays processing of large arrays of scanned plates has been successfully implemented, and catalogs of positions and stellar magnitudes of objects have been obtained for various observational programs: the FON program which processed 2260 plates of (MAN) and created the catalog of positions and Bvalues of 19.5 million stars and galaxies (Andruk et al, ,b, 2016a; the first epoch of observations to obtain proper motions in the vicinity of the scattered clusters 290 plates were photographed in Nikolaev observatory and a catalog of positions and B-values of 2.7 million stars was obtained (Protsyuk et al, 2014d); Saturn's satellites which processed 1385 positions from 250 astronegatives (Yizhakevych et al, 2015; other objects (Vavilova et al, 2014); observations of Uranus and Neptune where 1575 positions were obtained in different observatories , Pluto (59 positions) (Kazantseva et al, 2015) other Muminov et al, 2017). In 2015 started scanning and processing of 2200 plates -Kitab observatory part of FON program (from 0 to −20 degrees) Muminov et al, 2016) as well as over 1500 plates exposed in the U and V bands on 1.2 m Schmidt telescope (Alksnis et al, 1998;Eglite and Eglitis, 2016;Eglitis et al, 2016aEglitis et al, ,b, 2017.…”

Section: Introductionmentioning

confidence: 99%

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Processing of Digital Plates1.2m of Baldone Observatory Schmidt Telescope

Eglitis

Andruk

2017

Open Astronomy

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Abstract:The aim of this research is to evaluate accuracy of Plate Processing Method and to perform a detailed study of the Epson Expression 10000XL scanner, which was used to digitize plates from the database collection of the 1.2 m Schmidt Telescope installed in the Baldone Observatory. Special software developed in LINUX/MIDAS/ROMAFOT environment was used for processing the scans. Results of the digitized files with grey gradations of 8-and 16-bits were compared; an estimation of the accuracy of the developed method for rectangular coordinates determination and photometry was made. Errors in the instrumental system are ±0.026 pixels and ±0.024 m for coordinates and stellar magnitudes respectively. To evaluate the repeatability of the scanner's astrometric and photometric errors, six consecutive scans of one plate were processed with a spatial separation of 1200 dpi. The following error estimations are obtained for stars brighter than U< 13.5 m : σxy = ±0.021 to 0.027 pixels and σm = ±0.014 m to 0.016 m for rectangular coordinates and instrumental stellar magnitudes respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Processing of Digital Plates1.2m of Baldone Observatory Schmidt Telescope

Eglitis

Andruk

2017

Open Astronomy

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“…The preceding thorough investigations of scanner digitizing capabilities, have shown that in the case of proper methods of scanning [Andruk, 2012, Protsyuk, 2014a, Protsyuk, 2014b] and development of the appropriate software [Andruk, 2014, Andruk, 2015a, Andruk2015b, Protsyuk, 2014a, Protsyuk, 2014b, Protsyuk, 2015, Kazantseva, 2015, Vavilova, 2014, Yizhakevych, 2014Yizhakevych, 2015Yizhakevych, 2016, Yizhakevych, 2017] the feasibility exists to obtain coordinates and brightness of objects with the best accuracy possible for the photographic material. Two models of scanners were selected for FON plates digitizing, namely Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL [Andruk, 2005a, Andruk, 2007, Andruk, 2010, Golovnya, 2010, Yatsenko, 2011.…”

Section: Ukrainian Virtual Observatory and New Prospects Of Fonmentioning

confidence: 99%

Fon: From Start to Finish

Pakuliak

Andruk

Golovnia

et al. 2016

OAP

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ABSTRACT. Almost 40-year history of FON project ended with the creation of the whole northern sky catalog of objects down to B ≤16.5 m . The idea of 4-fold overlapping of the northern sky with 6 wide-field astrographs has not been realized in full. For historical reasons it has been transformed into the 2-fold overlapping observational program of MAO NAS of Ukraine, resulted in three versions of the multimillion catalog of positions, proper motions, and B-magnitudes of stars. The first version of 1.2 million stars had been finished before the 2000s and is based on the AC object list. The measurements of plates were made by automatic measuring complex PARSEC, specially developed for massive photographic reviews. As the input list was limited by AC objects, the most part of stars on the FON plates remained unmeasured. Principles of workflow organization of such works formed the basis for the further development of the project using the latest IT-technologies. For the creation of the second and the third versions of the catalog, the list of objects was obtained as a result of total digitizing of plates and their image processing. The final third version contains 19.5 million stars and galaxies with the maximum possible for the photographic astrometry accuracy. The collection of plates, obtained in other observatories -participants of the project, are partially safe and can be used for the same astrometric tasks.

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“…The techniques of astroplate digitization and further processing and determination of coordinates and magnitudes of stars are described in the series of publications (Andruk et al, 2005(Andruk et al, , 2007(Andruk et al, , 2010(Andruk et al, , 2016a(Andruk et al, , 2016bProtsyuk et al, 2014aProtsyuk et al, , 2014b. The results of the software testing for determination of Solar system bodies positions are described in (Kazantseva et al, 2015;Yizhakevych et al, 2014Yizhakevych et al, , 2015Yizhakevych et al, , 2016Yizhakevych et al, ,2017Protsyuk et al, 2014aProtsyuk et al, , 2014bEglitis et al, 2016aEglitis et al, , 2016b. Notice, that digitizing of astroplates has been performed using Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL commercial scanners, with the resolution 1200 dpi.…”

Section: Introductionmentioning

confidence: 99%

Asteroids Search Results in Large Photographic Sky Surveys

Shatokhina

Kazantseva

Yizhakevych

et al. 2017

OAP

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ABSTRACT. Photographic observations of XX century contained numerous and varied information about all objects and events of the Universe fixed on plates. The original and interesting observations of small bodies of the Solar system in previous years can be selected and used for various scientific tasks. Existing databases and online services can help make such selection easily and quickly.The observations of chronologically earlier oppositions, photometric evaluation of brightness for long periods of time allow refining the orbits of asteroids and identifying various non-stationaries.Photographic observations of Northern Sky Survey project and observations of clusters in UBVR bands were used for global search for small bodies of Solar system. Total we founded 2486 positions of asteroids and 13 positions of comets. All positions were compared with ephemeris.It was found that 80 positions of asteroids have a moment of observation preceding their discovery, and 19 of them are chronologically the earliest observations of these asteroids in the world.

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Processing results of digitized photographic observations of Pluto from the collections of the Ukrainian Virtual Observatory

Cited by 30 publications

References 17 publications

Processing of Digital Plates1.2m of Baldone Observatory Schmidt Telescope

Processing of Digital Plates1.2m of Baldone Observatory Schmidt Telescope

Fon: From Start to Finish

Asteroids Search Results in Large Photographic Sky Surveys

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