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 Ekaterina Shmaylova;Vladimir Dyachenko;Andrea Richichi;Anatoly Beskakotov;Aleksandr Maksimov;Arina Mitrofanova;Yuri Balega

作者机构：Special Astrophysical ObservatoryRussian Academy of SciencesNizhniy ArkhyzKarachai-Cherkessian RepublicRussia 369167 Astronomical InstituteSt.Petersburg State UniversityUniversitetskij Pr.28Petrodvorets198504St.PetersburgRussia INAF-Osservatorio Astrofisico di ArcetriLargo E.Fermi 550125FirenzeItaly 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2020年第20卷第11期

页      面：231-234页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

基　　金：The work was performed as part of the government contract of the SAO RAS approved by the Ministry of Science and Higher Education of the Russian Federation.The reported study was funded by RFBR(project No.20--32-70120) This research has made use of the SIMBAD database,operated at CDS,Strasbourg,France. 

主　　题：star binaries general instrumentation high angular resolution methods observational 

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.