Performed calculations of angles of the astronomical refraction in different ways and made a comparative analysis of the results of a calculation. Provides recommendations for the use of any means in different contexts.

Keywords: Astronomical refraction, the Hour angle, Anti-aircraft distance, atmosphere, Pulkovo table.

When performing measurements anti-aircraft distances of celestial bodies must take into account not only the corners of the astronomical refraction, but also its anomalies. The method of accounting for refraction based on observations of heavenly bodies near the horizon.

Keywords: Astronomical refraction, Anti-aircraft distance, atmosphere, Refractive errors, Azimuth

  As the most accurate method for determining angles of the astronomical refraction near horizon considered various ways of measuring method. Formulas to calculate the angles of the astronomical refraction she is a modern, combined, interpolation methods, as well as the way the hour angle.

Keywords: Refraction, the Hour angle, Anti-aircraft distance, Latitude, Declination

A method was developed предрасчета accuracy of measurements of the angles of the astronomical refraction of the near horizon and formulas for him. Calculated average quadratic error of determination of the angles of the astronomical refraction azimuth way and manner «hour angle» at the field paragraph.

Keywords: Astronomical refraction, the Hour angle, Zenith distance, Mean square error