![20180427_153724.jpg](files/b49f8753-c575-4a3e-88e5-5762a7d42aca/20180427_153724.jpg) Hi everybody! I am Felix and I work at the [MPE](https://www.mpe.mpg.de/index) in Munich, Germany. \ My instrumental work is focused on GRAVITY with the aim to improve the precision of our measurements and to develop a polarization calibration for the VLTI & GRAVITY. I am also increasingly involved in the new project [GRAVITY+](https://www.mpe.mpg.de/ir/gravityplus)! On the astrophysical side I am part of the Galactic Center team at MPE, where we study stellar orbits around the supermassive black hole SgrA\* and the emission of the black hole itself. I am looking forward to giving you an overview talk about GRAVITY. Feel free to contact me via [email](mailto:fwidmann@mpe.mpg.de) or [twitter](https://twitter.com/widmann_f).