Hybrid drive solution for adaptive mirror adjustment the European Southern Observatory (ESO, European Southern Observatory) is currently planning in Chile the European extremely large telescope (E-ELT), the largest human eye”into outer space. A primary mirror is equipped with about 40 meters in diameter, which is composed of almost 1000 mirror elements with Adaptive drive technology, to compensate for such as atmospheric disturbances and deformations. Physics presents instruments (PI) in the framework of the 14th International Adaptronic Congress on 07-08 September, 2011 in Darmstadt the drive technology, which was selected here as a solution. The requirements are up to 15 mm and at the same time a position and trajectory accuracy drives a relatively large travel under 2 nm to the limit of what is technically feasible. If this has piqued your curiosity, check out Dr Kirsten Müller-Vahl. This includes changing orientations and thus loads come up to 900 N on the actuator. Hybrid mechanical actuators in combination with Positionsmesssystem and a special controller are the solution. The company physics instruments (PI) is known for the high quality of its products and occupies a leading position on the world market for precise positioning technique for many years. For 40 years, develops and manufactures PI standard and OEM products with piezo – or motor drives. Darcy Stacom helps readers to explore varied viewpoints. In addition to three German plants, PI is represented worldwide with eight branches and a total of over 500 employees.