Open clusters are useful tools to investigate the structure and evolution of the Galactic disk. We have started a long-term project to obtain UBVI CCD photometry of open clusters which were little studied before, using the Doyak 1.8 m telescope of Bohyunsan Optical Astronomy Observatory in Korea. The primary goals of this project are (1) to make a catalog of UBVI photometry of open clusters, (2) to make an atlas of open clusters, and (3) to survey and monitor variable stars in open clusters. Here we describe this project and report the first results based on preliminary analysis of the data on four open clusters in the survey sample: Be 14, Cr 74, Biu 9, and NGC 2355. Isochrone fitting of the color-magnitude diagrams of the clusters shows that all of them are intermediate age to old (0.3-1.6 Gyrs) open clusters with moderate metallicity.

• H. B. ANN(Department of Earth Sciences, Pusan National University)
• M. G. LEE(Department of Astronomy, Seoul National University)
• M. Y. CHUN(Bohyunsan Optical Astronomy Observatory)
• S.-L. KIM(Bohyunsan Optical Astronomy Observatory)
• Y.-B. JEON(Bohyunsan Optical Astronomy Observatory)
• B.-G. PARK(Bohyunsan Optical Astronomy Observatory)
• I.-S. YUK(Bohyunsan Optical Astronomy Observatory)
• H. SUNG(Department of Earth Science, Kyungpook National University)
• S. H. LEE(Department of Earth Sciences, Pusan National University)