The Nikolaev Astronomical Observatory (NAO) was founded in 1821. In the initial “naval” time of its growth the observatory also carried out some works of an astronomical character. Later on, and especially in the last ...

A global gravity long-period nontidal oscillation is determined by means of superconducting gravimeter data from the Brussels Observatory and latitude observations from zenith telescope at the Plana Observatory in Bulgaria. ...

The first results of researches of GPS observations in Poltava are submitted. Linear trend, annual, semi-annual terms as well as a number of additional terms are marked out on each coordinate. It is shown that the annual ...

This paper is devoted to the problem of accuracy increasing in allowing for Earth’s atmosphere influences on results of daily ranging observations of the Earth artificial satellites (ASE). Atmosphere delays and their ...

The Zone Astrograph (D = 0.12 m, F = 2.04 m) of the Nikolaev Astronomical Observatory was equipped with the CCD camera of original manufacture (ISD017A, 1094×1160, 16×16 mkm²) in 2000. After some modernization and refinement ...

Some questions concerning of complex analysis of all available information about observations of stars with prismatic astrolabe are discussed. This analysis is indispensable for enhancing the validity of long series of ...

Evgen Pavlovych Fedorov (1909–1986) was a well known astronomer who played a very important role in the fundamental astrometry and geodynamics in the second half of the 20th century.

In July 2002 the CCD unfiltered images of eight sky areas with the IR/radio sources from ICRF 1732+389, 1803+784, 1807+698, 1845+797, 1943+228, 2023+335, 2223–052, and 2229+695 were obtained with the Zeiss-600 telescope ...

It has been found that the residual (Chandler) motion of the Earth’s rotation pole results from the forced translational motion of the Earth’s rotation axis relative to the geographic axis. The Earth’s rotation axis moves ...

The definition of O.Ya.Orlov for mean values of observed quantities for any epoch suits for application not only in astronomy, and in geophysics, geodesy, meteorology. The method of seasonal decomposition and adjustment ...