Abstract
The SPHERE project is a ESO second generation instrument which aims to detect giant extra-solar planets in the vicinity of bright stars and to characterise the objects found through spectroscopic and polarimetric observations.Technical tolerances are the tightest ever for an instrument installed at the VLT, and SPHERE demands a rather unique DRH software package to accompany the data from the observation preparation to the search for planetary signals. This paper addresses the current status of the data reduction and handling system (DRHS) for the SPHERE instruments. It includes descriptions of the calibration and science data, reduction steps and their data products. The development strategy for creating of a coherent software that allows to achieve high observation efficiency is briefly discussed.
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