Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work. Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES. Matthias TeczaHARMONI Instrument Scientist Research themeAstronomy and astrophysicsInstrumentation Sub departmentAstrophysics Research groupsAstronomical instrumentationExoplanet atmospheresExoplanets and Stellar PhysicsExtremely Large Telescope matthias.tecza@physics.ox.ac.uk Telephone: 01865 (2)73364 Denys Wilkinson Building, room 361G About Teaching Publications I am teaching first year Mechanics and Optics at Keble College, and at the department I am head of the first year Optics Lab.