nature of Ultra High Energy Cosmic Rays us-

The performance of the Auger Fluorescence telescope is discussed on the basis of a mass production chain. In order to get a realistic estimate of the detector resolution, a large number of fully simulated CORSIKA [1] showers have been used for this study. The propagation through the atmosphere and the detector response are taken into account and simulated in detail. Results for the the case of monocular reconstruction are presented here. No quality cuts for the event reconstruction have been applied so far. Finally, a schematic overview of the expected event topologies is given together with the display of a real event recently collected