CCD BVI photometry of M12 stars

The observations were done on the nights of UT dates 1995 May 6 and 9 by using the Kitt Peak National Observatory (KPNO) 0.9 m telescope. The file contains BVI data of the...本次观测于世界时（UT）1995年5月6日与9日晚间开展，使用基特峰国家天文台（Kitt Peak National Observatory，KPNO）0.9米望远镜完成。本文件包含……的BVI波段数据。