  We describe an improved version of the Hough transform search for continuous
gravitational waves from isolated neutron stars assuming the input to be short
segments of Fourier transformed data. The method presented here takes into
account possible non-stationarities of the detector noise and the amplitude
modulation due to the motion of the detector. These two effects are taken into
account for the first stage only, i.e. the peak selection, to create the
time-frequency map of our data, while the Hough transform itself is performed
in the standard way.
