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We show that high quality laser guide star (LGS) adaptive optics (AO)observations of nearby early-type galaxies are possible when the tip-tiltcorrection is done by guiding on nuclei while the focus compensation due to thechanging distance to the sodium layer is made 'open loop'. We achievecorrections such that 40% of flux comes from R<0.2 arcsec. To measure a blackhole mass (Mbh) one needs integral field observations of both high spatialresolution and large field of view. With these data it is possible to determinethe lower limit to Mbh even if the spatial resolution of the observations areup to a few times larger than the sphere of influence of the black hole.

Measuring the low mass end of the Mbh - sigma relation