http://dspace.nbuv.gov.ua:80/handle/123456789/114701 Wed, 15 Apr 2026 06:09:25 GMT 2026-04-15T06:09:25Z http://dspace.nbuv.gov.ua:80/bitstream/id/341483/ http://dspace.nbuv.gov.ua:80/handle/123456789/114701 http://dspace.nbuv.gov.ua:80/handle/123456789/119094 The modernity of the research of Romanian astronomer Constantin Popovici Chiruta, C. We present the model of the photogravitational field proposed by the romanian mathematician Constantin Popovici, basic equations. We give the variation of orbital energy in the photogravitational two bodies problem and energy integral. In this case the orbital energy is not conserved. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.nbuv.gov.ua:80/handle/123456789/119094 2011-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/119093 Lucky image performance simulation on the basis of optical turbulence data obtained on Mt. Shatdzhatmaz Safonov, B.S. Lucky imaging is a method allowing to achieve difiraction resolution on a moderate ground-based telescopes with the cost of magnitude limitation. To adequately evaluate capabilities of this technique for a given place (Mt. Shatdzhatmaz) we performed a Monte Carlo numerical simulation taking into account properties of optical turbulence measured there. Statistics of lucky imaging isoplanatic angle was evaluated on the basis of these data. Optimal atmospheric conditions for lucky imaging were obtained. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.nbuv.gov.ua:80/handle/123456789/119093 2011-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/119092 Determination of the reference frames deflections from optical observations of GNSS satellites Choliy, V.Ya.; Zhaborovskyy, V.P.; Taradiy, V.; Rykhlova, L. Optical observations of navigation satellites were carried out at Terskol observatory during 2007-2010 with the aim to determine the deffection angles between GPS and GLONASS dynamical reference frames. There were three different observations strategies: celestial equator crossing, intersection of visible satellite paths, occultation of astrometric stars with the satellite. We present methodology of observation, data processing and the first results. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.nbuv.gov.ua:80/handle/123456789/119092 2011-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/119091 KyivGeodynamics++: software for processing satellite laser ranging data Choliy, V.Ya.; Zhaborovskyy, V.P. We present the software package KyivGeodynamics++ intended for processing satellite laser ranging data. Review of architecture, the main algorithms, results of the first tests are presented. Sat, 01 Jan 2011 00:00:00 GMT http://dspace.nbuv.gov.ua:80/handle/123456789/119091 2011-01-01T00:00:00Z