Lensing Survey of the Most X-Ray Luminous Galaxy Clusters
  We present the first three galaxy clusters of a larger sample of the most X-ray luminous galaxy clusters selected from the ROSAT Bright Survey. This project, which is a systematic search for strong lensing, aims at arc statistics, mass determinations and studies of distant lensed galaxies.   The three galaxy clusters presented here have been observed with the Wide Field Imager at the ESO2.2m in the R- and V-band. The images show lensing features like distinct distorted galaxies and arcs. Mass distributions of the lensing galaxy clusters and photometric properties of some arc candidates are presented. In addition we report the discovery of three giant arcs. 
W. Kausch (1), S. Schindler (1), T. Kronberger (1), J. Wambsganss (2),   A. Schwope (3), T. Erben (4); ((1) Institute for As...