Astroinformation resource of the Ukrainian virtual observatory: Joint observational data archive, scientific tasks, and software

Vavilova, I. B.; Pakulyak, L. K.; Shlyapnikov, A. A.; Protsyuk, Yu. I.; Саваневич, В. Е.; Андронов, И. Л.; Andruk, V. M.; Kondrashova, N.; Baklanov, A. V.; Golovin, Alex; Fedorov, P. N.; Akhmetov, V. S.; Isak, Ilena; Mazhaev, A.; Golovnya, V. V.; Virun, N.; Zolotukhina, A. V.; Kazantseva, L. V.; Virnina, Natalia A.; Breus, V. V.; Kashuba, S.; Chinarova, L. L.; Kudashkina, L. S.; Epishev, V. P.

doi:10.3103/s0884591312020067

Cited by 49 publications

(36 citation statements)

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“…Such a phenomenological modeling is especially effective for new (newly discovered or poorly studied) variables of the Algol type (New Algol Variable), which, particularly, are studied in a frame of prоjects «Ukrainian Virtual Observatory» [28] and «Inter-Longitude Astronomy » [29].…”

Section: Discussionmentioning

confidence: 99%

Phenomenological modeling of the light curves of algol-type eclipsing binary stars

Андронов

2012

Astrophysics

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Section: Discussionmentioning

confidence: 99%

Phenomenological modeling of the light curves of algol-type eclipsing binary stars

Андронов

2012

Astrophysics

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“…In its turn, such objects should be registered in the internal catalog of objects that are motionless in the series of CCD-frames (Vavilova et al 2012a). This catalog is also helpful to reduce the number of false SSO detections in the software for automatic CCD-frame processing of asteroid surveys (Pohorelov et al 2016).…”

Section: Problem Statementmentioning

confidence: 99%

“…We compiled the set of objects with practically zero apparent motion in the framework of the CoLiTec project (Savanevych et al 2015a,b) and used it as the internal catalog (IC) of motionless objects in a series of frames (Vavilova et al 2012a).…”

Section: Indicators Of Quality Of the Near-zero Apparent Motion Detecmentioning

confidence: 99%

“…In 2009, the authors of this paper developed the CoLiTec (Collection Light Technology) software for the automated detection of the solar system minor bodies in CCD-frames series 1 (see, in detail, Savanevych 1999Savanevych , 2006Savanevych et al 2012Savanevych et al , 2015aVavilova et al 2012aVavilova et al ,b, 2017Vavilova 2016;Pohorelov et al 2016). Since 2009 it has been installed at several observatories: Andrushivka Astronomical Observatory (A50, Ukraine; Ivashchenko et al 2013), ISON-NM Observatory (H15, the US; Elenin et al 2013), ISON-Kislovodsk Observatory (D00, Russia;ISON-Kislovodsk 2016), ISON-Ussuriysk Observatory (C15, Russia;Elenin et al 2014), Odessa-Mayaki (583, Ukraine;Troianskyi et al 2014), Vihorlat Observatory (Slovakia; Dubovsky et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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A method of immediate detection of objects with a near-zero apparent motion in series of CCD-frames

Savanevych

Khlamov

Vavilova

et al. 2018

A&A

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The paper deals with a computational method for detection of the solar system minor bodies (SSOs), whose inter-frame shifts in series of CCD-frames during the observation are commensurate with the errors in measuring their positions. These objects have velocities of apparent motion between CCD-frames not exceeding three rms errors (3σ) of measurements of their positions. About 15% of objects have a near-zero apparent motion in CCD-frames, including the objects beyond the Jupiter's orbit as well as the asteroids heading straight to the Earth. The proposed method for detection of the object's near-zero apparent motion in series of CCD-frames is based on the Fisher f -criterion instead of using the traditional decision rules that are based on the maximum likelihood criterion. We analyzed the quality indicators of detection of the object's near-zero apparent motion applying statistical and in situ modeling techniques in terms of the conditional probability of the true detection of objects with a near-zero apparent motion. The efficiency of method being implemented as a plugin for the Collection Light Technology (CoLiTec) software for automated asteroids and comets detection has been demonstrated. Among the objects discovered with this plugin, there was the sungrazing comet C/2012 S1 (ISON). Within 26 min of the observation, the comet's image has been moved by three pixels in a series of four CCD-frames (the velocity of its apparent motion at the moment of discovery was equal to 0.8 pixels per CCD-frame; the image size on the frame was about five pixels). Next verification in observations of asteroids with a near-zero apparent motion conducted with small telescopes has confirmed an efficiency of the method even in bad conditions (strong backlight from the full Moon). So, we recommend applying the proposed method for series of observations with four or more frames.

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“…Today, computer technology makes it possible to effectively analyze the astronomical archives that contain even terabytes of astronomical images (Vavilova et al, 2012). For the processing of astronomical images, such software packs as IRAF, IDL, MIDAS, etc.…”

Section: Introductionmentioning

confidence: 99%

Astronomical Image Processing for High-Accurate Astrometry Data

Dmytrenko¹,

Akhmetov²

2017

OAP

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ABSTRACT. This article presents the main results of the initial processing of some of the astronomical images obtained from the archive of the digitized photographics survey of the whole sky SuperCOSMOS. Using of the median filtering and gausian convolution procedure with the adaptive kernel allows to carry out the initial processing of astronomical images without calibration frames. After the initial processing, the photocenters of the celestial objects were identified by various methods. It has been concluded that after the use of the mathematical methods for the initial processing of the digitized photographics images, the position of objects is calculated with a higher random and systematic precision.

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Astroinformation resource of the Ukrainian virtual observatory: Joint observational data archive, scientific tasks, and software

Cited by 49 publications

References 10 publications

Phenomenological modeling of the light curves of algol-type eclipsing binary stars

Phenomenological modeling of the light curves of algol-type eclipsing binary stars

A method of immediate detection of objects with a near-zero apparent motion in series of CCD-frames

Astronomical Image Processing for High-Accurate Astrometry Data

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