Abstract
Observing procedures and timings of the occultation of 1 Vulpeculae by the asteroid Pallas, observed with the 150-cm and 84-cm telescopes of the Observatorio Astronomico Nacional at San Pedro Matir, are given and discussed. Measured quantities for the spectroscopic binary 1 Vul are also presented. Our observing errors are estimated, and prospects for further observations of this type indicated.