Four-colour photometry of eclipsing binaries. XXXVI. Light curves of the O7V+O9V system V 3903 Sagittarii

Complete uvby light curves of the young detached double-lined massive O-type eclipsing binary V 3903 Sagittarii, obtained from 1989 to 1994, are presented. The observations were obtained at two different sites and a discussion of the characteristics of both data sets is included. Based on observations done with the ZEISS 60$\,$cm telescope at the Pico dos Dias Observatory (PDO), National Laboratory of Astrophysics, LNA--CNPq, Brasópolis, MG, Brazil, and with the Danish 50~cm Telescope (SAT) at the European Southern Observatory (ESO), La Silla, Chile.