The first results of observations of lunar occultations in different spectral ranges at the 6-m telescope of the SAO RAS

作者：Ekaterina Shmaylova,Vladimir Dyachenko,Andrea Richichi,Anatoly Beskakotov,AleksandrMaksimov,Arina Mitrofanova,Yuri Balega

摘要：Observations by the method of lunar occultations at the 6-m telescope of the SAO RAS reach a resolution limit better than 1mas.We have devised a new method of observation,which allows obtaining the curves of lunar occultations simultaneously in different ranges of the visible part of the spectrum,and conducted the first observations using amodified optical system.In January 2019,applying the newmethod,the magnitude differences of the components of the binary star HD 36524 in the R and I bands were measured,which were 1.5 and 1.3mag,respectively,in good agreement with values calculated from the Gaia mission.According to the obtained data,it was determined that with this method it is possible to reach a signal-to-noise ratio of about 5–10 for stars of 10th magnitude.We discuss the applicability of the proposed optical scheme for the study of binary stars.

发文机构：Special Astrophysical Observatory Astronomical Institute INAF-Osservatorio Astrofisico di Arcetri

关键词：starBINARIESgeneralinstrumentationhighangularresolutionmethodsOBSERVATIONAL

分类号： P12[天文地球—天体测量]