Resumen

ORLOV, V. G.; VOITSEKHOVICH, V. V.  y  GUERRERO, C. A.. Speckle interferometry at the Observatorio Astronómico Nacional. IV. Rev. mex. astron. astrofis [online]. 2012, vol.48, n.2, pp.177-181. ISSN 0185-1101.

We present speckle interlerometric measurements oí binary stars performed during September and October oí 2009 with the 2.1 m telescope of the Observatorio Astronómico Nacional at SPM (México). We report here the results of 200 measurements of 196 pairs with a primary limiting magnitude of V = 12.3. The measured angular separations range from 0".115 to 5".26. Ninety seven pairs have separations less than 1". The mean error in separation is 0".03 and I^o.5 in position angle. The usual 180° ambiguity was corrected for a majority of position angles by comparison with observations performed by other observers.

Palabras llave : binaries [visual]; stars [fundamental parameters]; techniques [high angular resolution]; techniques [interferometric].