tokens: Acknowledgements We acknowledge the substantial efforts of both the CFHT staff in implementing the Legacy Survey and of the CFHTLenS team in preparing catalogues of galaxy ellipticities and photometric redshifts. This work is based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/IRFU, at the CanadaFranceHawaii Telescope (CFHT) that is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences de lUnivers of the Centre National de la Recherche Scientifique (CNRS) of France and the University of Hawaii. This research used the facilities of the Canadian Astronomy Data Centre operated by the National Research Council of Canada with the support of the Canadian Space Agency. CFHTLenS data processing was made possible thanks to significant computing support from the NSERC Research Tools and Instruments grant programme. MJH and MLB acknowledge support from NSERC.
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