Institute of Astronomy, University of Cambridge
The Institute of Astronomy (IoA) at the West Cambridge site has a leading role in the processing and analysis of the photometric data collected by the European mission Gaia (http://www.cosmos.esa.int/web/gaia):The IoA hosts most of the members (including leading roles) of the Coordination Unit 5 (CU5) responsible for the photometric data produced by the Gaia mission. This includes integrated photometry in the broad G-band and low resolution spectroscopy from the Blue and Red Photometers. The IoA is also the location of the Data Processing Centre operating the photometry software pipeline. The core of the Science Alerts team also resides at the IoA. Following the cyclic nature of the Gaia processing within the Data Processing and Analysis Consortium (DPAC), the first photometric catalogue has now been released to the other DPAC systems and a selection of that catalogue is being validated to be included in the first public data release planned for the summer of 2016. The basic algorithms for the calibration of the data have been implemented, however additions and improvements to deal with complex or non-nominal cases will be needed in the near future.