CCD Photometry of NGC 2658, 2849, 3247

CCD photometry of the galactic open clusters NGC 2658, NGC 2849, and NGC 3247 is presented. For the first two clusters, BV(RI)_c data are given, and for NGC 3247 the data are...本文提供了银河疏散星团NGC 2658、NGC 2849及NGC 3247的CCD测光数据。针对前两个星团，给出了BV(RI)_c波段的测光数据；而对于NGC 3247，其数据为……