Description
We are now well into science operations with Euclid and are preparing for internal DR1 expected late this year. In order to measure cosmological parameters with 1% precision via the weak lensing by the large scale structure, we need to measure the 1% coherent distortion of galaxy images, cosmic shear, over 2,500 sq. deg. for DR1 with exquisite accuracy. However, we also have to control the systematic errors impacting the measurement. In my talk I will review the results from the work I am leading: pre-launch data, early release images (Abell 2390), and Q1 data. This is all in preparation for the much larger data volumes in the months to come.
Primary author
Giuseppe Congedo
(Institute for Astronomy, University of Edinburgh)
