12-16 June 2017
IN2P3 computing center
Europe/Paris timezone

Photometric Calibration: lessons from CFHTLS

14 Jun 2017, 15:10
35m
Amphitheatre (IN2P3 computing center)

Amphitheatre

IN2P3 computing center

21 Avenue Pierre de Coubertin CS70202 69627 VILLEURBANNE Cedex FRANCE Lat: 45°46'57.8"N Lon: 4°51'54.9"E

Speaker

Nicolas Regnault (LPNHE)

Description

For about a decade, photometric calibration has been identified as a potential limitation of current and future imaging surveys. Uncertainties on the relative (band to band) flux scale are currently the dominant contribution to the systematic error budget affecting SNIa distances. Non-uniformities of the imager response may introduce spurious correlations in the LSS analyses, via the photometric redshifts. In this talk, I review the lessons learnt from the analysis of the CFHTLS survey, and I discuss related topics of the LSST-DESC roadmap.

Presentation Materials