Speckle interferometry of southern double stars. II. Measures from the CASLEO 2.15 meter telescope, 1995-1996

Relative astrometry is presented for 198 observations of 160 double stars. The data were obtained at the 2.15 m telescope at the Complejo Astronomico El Leoncito (Argentina) with a multianode microchannel array (MAMA) detecto r system. Five high-quality nondetections are also reported. When judged ag ainst ephemeris positions for binaries with very well determined orbits, th e separation residuals exhibit a root mean square deviation of 13.2(-1.9)(3.4) mas and the position angle residuals exhibit rms deviation of 2.degree s9(-0.degrees5)(+0.degrees8). Factors affecting the measurement precision a re discussed.