15 colour photometry of the Landolt SA95 standard star field Xu Zhou, Zhaoji Jiang, Jun Ma, Suijian Xue, Hong Wu, Jiansheng Chen, Jin Zhu, Weihsin Sun and R. A. Windhorst A&A, 397 1 (2003) 361-369 Published online: 11 December 2002 DOI: 10.1051/0004-6361:20021467