  We present the first results of an asteroid photo--polarimetry program
started at Asiago--Cima Ekar Observatory. The aim of our survey is to estimate
diversity in polarimetric properties of asteroids belonging to different
taxonomic and dynamical classes. The data were obtained with the polarization
analyser placed inside the Faint Object Spectrographic Camera (AFOSC) of the
1.8m telescope. This instrument allows simultaneous measurements of the two
first Stokes parameters without any lambda/2 retarding plate. Our survey began
in 2002, and up to now we have obtained data on a sample of 36 asteroids; most
of them are being investigated with the polarimetric technique for the first
time. Combining our data with those already available in literature, we present
an estimate of the inversion angle for 7 asteroids in this paper. Furthermore,
we present the polarimetric measurements of the rare asteroid classes belonging
to the A and D types and a detailed VRI observations at extremely small phase
angles of the low albedo asteroid 1021 Flammario
