The GTC/OSIRIS Data Reduction System

We present the online and the offline data reduction system for OSIRIS,
the optical multi-mode instrument for GranTeCan. The software is written
in Python and invokes PyRAF tasks which have been optimized for the
instrument. We review the characteristics of the instrument and of the
software. We will also present the improvements which are foreseen for
both the instrument and the software. The flexibility of the software
makes it easy to be adapted to other telescopes/instruments.