  COATLI will provide 0.3 arcsec FWHM images from 550 to 900 nm over a large
fraction of the sky. It consists of a robotic 50-cm telescope with a
diffraction-limited fast-guiding imager. Since the telescope is small, fast
guiding will provide diffraction-limited image quality over a field of at least
1 arcmin and with coverage of a large fraction of the sky, even in relatively
poor seeing. The COATLI telescope will be installed at the at the Observatorio
Astron\'omico Nacional in Sierra San Pedro M\'artir, M\'exico, during 2016 and
the diffraction-limited imager will follow in 2017.
