2 Observations

The 458 micrometer measurements are listed in Tables 1 and 2. Table 1 includes 179 observations of 102 stars performed at Calar Alto Observatory and Table 2 includes 279 observations of 102 stars at Ramón María Aller Observatory. The results are presented in the same format in both Tables: each binary is identified by its WDS catalogue number (Worley & Douglass 1996), followed by the star's name and its ADS catalogue number (Aitken 1932) if any. Letters denote the components in the case of the multiple star systems. Subsequent columns represent the observation epoch, the position angle, the angular separation together with the number of nights on which the star was observed. In no case did the measurements averaged differ by more than $2\hbox{$^\circ$}$ for position angles. For angular separation, the estimated error varies from 10% for the very close pairs to less than 1% for the very wide ones.

Acknowledgements

I would like to thank the Instituto Geográfico Nacional, the staff and assistant personnel at E.O.C.A. for their help and the facilities made available at Calar Alto. This work was carried out as part of the research projects PB 92-1074 and XUGA 24301B96 supported by D.G.I.C.Y.T. and the Xunta de Galicia respectively.