Перегляд за Автор "Bondarenko, Yu. N."

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  • Ескіз
    Документ
    INTERESTING MOON’S SURFACE FEATURES. OUR STUDY AND SOME INFERENCES
    (Astroprint, 2013) Bondarenko, Yu. N.
    ABSTRACT. In this article the results of the long-term CCD observations of the Moon are presented. We describe some unusual features existing on the Moon's surface and discuss their possible origin.
  • Ескіз
    Документ
    New wide-field telescope with a mirror diameter of 600 mm for the telescope network of the Odessa Observatory
    (Одеський національний університет імені І. І. Мечникова, 2020) Fashchevsky, N. N.; Podlesnyak, S. V.; Bondarenko, Yu. N.; Andrievsky, S. M.; Romanyuk, Ya. O.
    Optical scheme of the new wide-field telescope of the telescope network of Odessa Observatory is described.The telescope optical layout is designed as a mirror-lens system with a Ross-type two-lens corrector and a hyperbolic primary mirror with diameter of 600 mm. The prime focus corrector is capable of imaging a field of 2 degrees, the rootmean-square radius of the diffraction spot is about 4.5 m, which is 2.5 times larger than that of the diffraction-limited spot (Airy disk).
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    Observations of the mutual phenomena of the Galilean moons in 2009
    (Astroprint, 2010) Koshkin, Nikolay I.; Korobeinikova, E. A.; Shakun, Leonid S.; Dorokhov, N.; Doan, D.L.; Manh, T.N.; Minh, T.N.; Udovichenko, S. N.; Bondarenko, Yu. N.; Kashuba, V. I.; Klabukova, A.; Кошкин, Николай Иванович; Кошкін, Микола Іванович
    The instrumental and ephemeris preparation for the photometric observations of the mutual phenomena in the system of planetary satellites was conducted within the PHEMU09 project. Several reliable light curves and more than two tens of preparatory photometric observations of various mutual phenomena in the Jovian system were obtained. The observation data were processed, and the moments of the greatest phases of the phenomena were defined. The difference of moments of the observed greatest phases of the phenomena and the ephemerides, computed by the theory of V. Lainey, is about 0.02^0.5 minutes. To construct an improved theory of motion of the Jovian moons, the observations are to be used for the concluding processing in the IMCCE (Institute de Mecanique et de calcul des ephemerides, France) that coordinates the PHEMU09 campaign.
  • Ескіз
    Документ
    Spherical primary mirror in telescopes with complex (multi-element) optical designs
    (Одеський національний університет імені І. І. Мечникова, 2021) Podlesnyak, S. V.; Fashchevsky, N. N.; Bondarenko, Yu. N.; Andrievsky, Serhii M.; Андрієвський, Сергій Михайлович; Андриевский, Сергей Михайлович
    An optical design for telescope with spherical primary mirror, planoidal surface and two-lens corrector is discussed. The spherical mirror has an aperture ratio 1/2.69. After reflection from the spherical mirror, the wave front falls on a planoidal surface and “forms” the reflected wave front from a virtual mirror with e2 = 1.576. After passing the two-lens corrector, the light is collected in the focal plane. A dot diagram in the focal plane shows that all three-order aberrations are successfully corrected. The effective field of view is 2 degrees. The aperture ratio is 1/2.28.