  The Cherenkov light flashes produced by Extensive Air Showers are very short
in time. A high bandwidth and fast digitizing readout, therefore, can minimize
the influence of the background from the light of the night sky, and improve
the performance in Cherenkov telescopes. The time structure of the Cherenkov
image can further be used in single-dish Cherenkov telescopes as an additional
parameter to reduce the background from unwanted hadronic showers. A
description of an analysis method which makes use of the time information and
the subsequent improvement on the performance of the MAGIC telescope
(especially after the upgrade with an ultra fast 2 GSamples/s digitization
system in February 2007) will be presented. The use of timing information in
the analysis of the new MAGIC data reduces the background by a factor two,
which in turn results in an enhancement of about a factor 1.4 of the flux
sensitivity to point-like sources, as tested on observations of the Crab
Nebula.
