SIMBAD references

Position angles and separations resulting from 2406 speckle interferometric observations of 547 binary stars are tabulated. This is the second in a series of papers presenting measures obtained using the 66 cm refractor at the US Naval Observatory in Washington, DC, with an intensified CCD detector. Program stars range in separation from 0".2 to 3".8, with Δm≤2.5 mag and a limiting magnitude of V=10.0. The observation epochs run from 1993 January through 1995 August. Random errors are estimated to be 14 mas in separation and 0°.52/ρ in position angle, where ρ is the separation in arcseconds. The instrumentation and calibration are briefly described. Aspects of the data analysis related to the avoidance of systematic errors are also discussed.