Tracking Mirror for Measurement of Extreme Energy Cosmic Rays from Space

We propose a new idea of tracking mirror for a space based detector, observing atmosphere fluorescence, radiated by EAS, initiated by extreme energy cosmic rays. The concept of the tracking mirror is based on recent development on semiconductor MEMS (Micro Electro Mechanical Systems) technology. The tracking mirror consists of a large number of micro mirror arrays each of which is controlled indep endently by addressing signals from the active silicon matrix. The array system is programmed and configured at a given instance to be a mirror-concentrator with axis direction and fo cal distance both under control in real time. When an EAS event is detected the mirror is rearranged to track the event by minimizing aberrations.