  If uncorrected, the Coriolis force due to the rotation of the Earth causes
significant aberration of images produced by large liquid-mirror telescopes. We
show that this problem can be eliminated by a fixed compensating tilt of the
liquid-mirror rotation axis. The required tilt angle, which is a function of
latitude and mirror rotation rate, is of order 10 arcsec for current
telescopes. This result removes the last fundamental obstacle to achieving
diffraction-limited performance with large liquid mirrors.
