The Lunar Ultraviolet Observatory: preparatory optical activities and detector

The Lunar Ultraviolet Observatory is designed to map the Earth exosphere, the magnetosphere and the near-Earth space. The observatory is a small space telescope to be set in Lunar orbit to produce wide field images (~10x10 deg2) in narrow and broad bands in the 115-175 nm spectral range. In this presentation, we will describe the results of the on-going tests of critical optical elements and the detector.