CCD SPECKLE OBSERVATIONS OF BINARY STARS WITH THE WIYN TELESCOPE. VI. MEASURESDURING 2007-2008

摘要

Results of 974 speckle observations of 546 binary stars are presented. Observations were obtained at the WIYN3.5 m Telescope at Kitt Peak National Observatory during the time interval from 2007 January to 2008 June. Inall cases, the relative separation and position angle of the components are measured, and the magnitude differenceis determined in 809 cases. The precision of the results as judged from repeat observations and objects with verywell-determined orbits is similar to previous papers in this series, namely --3 mas in separation and <1° in positionangle in most cases. Similarly, the photometric precision remains consistent with previous WIYN speckle data, onaverage —0.1 mag per observation. Six systems of special interest are discussed.