Berkeley 30
Number of stars per data source
Reference 88 : 1617 stars
Reference 217 : 1114 stars
Reference 389 : 154 stars
References
- 88
- Phelps R.L., Janes K.A., Montgomery K.A.
- (1994) Astron. J. 107, 1079
- Development of the galactic disk: a search for the oldest open clusters
- 1994AJ....107.1079P
- 217
- Ann H.B., Lee M.G., Chun M.Y., Kim S.-L. Jeon Y.-B., Park B.-G., Yuk I.-S., Sung H., Lee S.H.
- (1999) J. Korean Astron. Soc. 32, 7
- BOAO photometric survey of galactic open clusters. I. Berkeley 14, Collinder 74, Biurakan 9, and NGC 2355
- 1999JKAS...32....7A
- 389
- Hasegawa T., Malasan H.L., Kawakita H., Obayashi H., Kurabayashi T., Nakai T., Hyakkai M., Arimoto N.
- (2004) Publ. Astron. Soc. Japan 56, 295
- New photometric data of old open clusters in the anti-galactic center region
- 2004PASJ...56..295H