  MAORY is the adaptive optics module for ELT providing two gravity invariant
ports with the same optical quality for two different client instruments. It
enable high angular resolution observations in the near infrared over a large
field of view (~1 arcmin2 ) by real time compensation of the wavefront
distortions due to atmospheric turbulence. Wavefront sensing is performed by
laser and natural guide stars while the wavefront sensor compensation is
performed by an adaptive deformable mirror in MAORY which works together with
the telescope's adaptive and tip tilt mirrors M4 and M5 respectively.
