The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

... New period of the third body in the system of the eclipsing HgMn binary star AR Aur was derived based on new photoelectric and CCD observations. 1 Intro duction AR Aur (HD 34364, HR 1728) is a double­lined spectroscopic well­detached eclipsing binary with orbital period of 4d 13. ... Circles -- minima times computed by our method, squares -- minima times adopted from literature. minima determinations published new periods of the third body and new physical characteristics of the system. ...