We present speckle interferometric measurements of binary stars performed during September and October of 2009 with the 2.1m telescope of the Observatorio Astronomico Nacional at SPM (Mexico). 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 100. The mean error in separation is 0.03" and 1.5{deg} in position angle. The usual 180{deg} ambiguity was corrected for a majority of position angles by comparison with observations performed by other observers.

Cone search capability for table J/other/RMxAA/48.177/table2 (Speckle measurements on the 2.1m telescope)