  MicroLux is a GPS-based high precision and high speed timing add-on to the
Calar Alto Lucky Imaging camera AstraLux. It allows timestamping of individual
CCD exposures at frame rates of more than 1 kHz with an accuracy better than
one microsecond with respect to the UTC timeframe. The system was successfully
used for high speed observations of the optical pulse profile of the Crab
pulsar in January and November 2007. I present the technical design concept of
MicroLux as well as first results from these observations, in particular the
reconstructed pulse profile of the pulsar.
