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1 Cosmic Shear from STIS Pure Parallels II Analysis

By H. Hämmerle, J. -m. Miralles, P. Schneider, T. Erben, R. A. E. Fosbury, W. Freudling, N. Pirzkal, B. Jain and S. D. M. White

Abstract

The measurement of cosmic shear requires deep imaging (to beat the noise due to the galaxies’ intrinsic ellipticity distribution) with high image quality (because every non-corrected PSF anisotropy mimics cosmic shear) on many lines of sight to sample the statistics of large-scale structure. The STIS camera on-board HST has a very good performance in that respect, which we demonstrate here, by using archival data from the STIS pure parallel program between June 1997 and October 1998. The data reduction and catalog productio

Year: 2001
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