CCD photometric search for peculiar stars in open clusters - II. NGC 2489,NGC 2567, NGC 2658, NGC 5281 and NGC 6208

High accurate photometric data in the three filter, narrow-band Delta alpha -system for five open clusters (NGC 2489, NGC 2567, NGC 2658, NGC 5281 and NGC 6208) are presented permitting one to detect apparent chemically pecul iar stars. The ages and distances are wide spread to improve the statistics of peculiar stars in our Milky Way. A total of 235 stars within these clus ters have been observed. We have detected ten apparent peculiar objects (si x with significant positive and four with negative Delta alpha -values) in four open clusters. Although three of them within the boundaries of NGC 256 7 are probably not members of this cluster. Since no Stromgren uvby beta da ta are available from the literature, Johnson UBV photometry was used to te st and calibrate our photometric data. The results from a comparison of bot h systems are excellent.