Abstract
ESA’s Gaia astronomy mission, that was launched 19th December 2013, aims at mapping more than one billion stars and objects. The scientific data processing has been delegated to the Data Processing and Analysis Consortium (DPAC), which is composed of more than 400 people all across Europe. This consortium, organized in 9 scientific coordination units across 6 data processing centers, is presented herein. Responsible for a data processing centre (DPCC) that will run 3 scientific coordination units, CNES is responsible for a large part of the Gaia data processing. This paper focuses on the organization of the development and operations of this processing center inside the DPAC, dealing with challenging constraints: multiple heterogeneous teams involved without contractual relationships, poor technical interface and planning definition.
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