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Paper: Testing Photometric Methods in the Euclid Testbed
Volume: 485, Astronomical Data Analysis Software and Systems XXIII
Page: 513
Authors: Kümmel, M.; Mohr, J.; Desai, S.; Henderson, R.; Koppenhoefer, J.; Paech, K.; Wetzstein, M.
Abstract: The Euclid satellite will investigate the distance-redshift relationship and the evolution of cosmic structures by measuring shapes and redshifts of galaxies and clusters of galaxies. The various Euclid experiments require very accurate object photometry in order to achieve its science goals. Building upon our experience in the Dark Energy Survey data management, we have developed the Euclid Testbed which allows one to compare different methods for various data processing steps such as object detection and object photometry. Our first target is testing photometric methods that are based on measurements taken on the ensemble of single images and not on co-added images. In this contribution we present and discuss the structure of the Euclid Testbed. We introduce our own single image photometry software FitPhot, and give a detailed comparison of its accuracy with other photometric methods/software.
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