Photographic Observations of Jupiter and its Satellites Made in 1980 ON the ESO Gran Prism Objectiv at La-Silla

In 1980, we have observed Jupiter and its satellites at the GPO (f= 4 m, D = 40 em) of the European Southern Observatory (ESO) La Silla. Measurements were performed at the Observatorio do Valongo with the Ascorecord measuring machine (0, 1 p) and reductions by means of five reference stars at the Laboratorio de Cientfiica (LCC/CNPq).