LDEF (Prelaunch), AO187-01 : The Chemistry of Micrometeoroids, Tray A11 The prelaunch photograph was taken in SAEF II at KSC prior to installation of the Chemistry of Micrometeoroid Experiment (CME) on the LDEF. The Chemistry of Micrometeoroid (CME) prelaunch photograph shows six (6) aluminum detector plates mounted in a three(3) inch deep LDEF peripheral experiment tray. The plates are unprotected and are exposed to the total mission environment, ground handling as well as flight. Nonmagnetic stainless steel fasteners are used to attach the plates in the LDEF provided experiment tray.