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The Messenger 126
December 2006


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Probing the Universe Using a Mostly Virtual Survey:
The Garching-Bonn Deep Survey


Marco Hetterscheidt [1], Patrick Simon [1], Thomas Erben [1], Peter Schneider [1], Mischa Schirmer [2], Jörg P. Dietrich [1,8], Hendrik Hildebrandt [1], Oliver Cordes [1], Tim Schrabback [1], Lutz Haberzettl [3,6], Olaf Schmithuesen [3], Clemens Trachternach [3], Christian Wolf [4], Klaus Meisenheimer [5], Alberto Micol [7], Francesco Pierfederici [8]

[1] Argelander-Institut für Astronomie, Universität Bonn, Germany; [2] Isaac Newton Group of Telescopes, Santa Cruz de La Palma, Tenerife, Spain; [3] Astronomisches Institut der Ruhr-Universität Bochum, Germany; [4] Denys Department of Physics, University of Oxford, United Kingdom; [5] Max-Planck-Institut für Astronomie, Heidelberg, Germany; [6] Department of Physics and Astronomy, University of Louisville, USA; [7] ESA/ESO Space Telescope European Coordinating Facility, Garching, Germany; [8] ESO

Abstract: We have entered a new era of powerful instruments, enabling high-precision cosmological observations. The Wide-Field-Imager (WFI) at the ESO/MPG 2.2-m telescope is a precursor of them since its field of view is large and of superb image quality. We employed the WFI to compile the Garching-Bonn Deep Survey (GaBoDS), where most of the high-quality images are obtained via data mining the ESO archive. This large virtual survey is used to determine some of the statistical properties of the Universe utilising weak gravitational lensing.

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