Astrometry and Photometry of Open Clusters: NGC 1746, NGC 1750 and NGC 1758

摘要: We present an astrometric and photometric analysis of a 5 square degree region around NGC 1746, 1750 1758, close to the Galactic anti-center (l = 179°, b -10°), in Taurus. describe acquisition, reduction observational data, including development innovative data tools. The comprise CCD UBVRI photometry, photographic BVR photometry proper motions. clusters 1758 are poor loose. determine several physical parameters (distance, age, colour excess, positions, density profiles). mutual separation, their relative velocity age difference allows us conclude that these two physically independent. No real object area can be identified as 1746.