Cosmic shear from STIS Pure Parallels: I Data
Abstract
Following the second HST servicing mission in 1997 when the STIS instrument was installed and the capability for parallel observations was enhanced, a substantial archive of non-proprietary parallel data has been accumulating. In this paper, we discuss the use of unfiltered STIS imaging data for a project that requires deep observations along as many independent lines-of-sight as possible. We have developed a technique to determine which datasets in the archive can safely be co-added together and have developed an iterative co-addition technique which enabled us to produce 498 high-quality, deep images. The principal motivation for this work is to measure the Cosmic Shear on small angular scales and a value derived from these data will be presented in a subsequent paper. A valuable by-product of this work is a set of high quality combined fields which can be used for other projects. The data are publicly available at http://www.stecf.org/projects/shear/
Cite
@article{arxiv.astro-ph/0102330,
title = {Cosmic shear from STIS Pure Parallels: I Data},
author = {N. Pirzkal and L. Collodel and T. Erben and R. A. E. Fosbury and W. Freudling and H. Haemmerle and B. Jain and A. Micol and J. -M. Miralles and P. Schneider and S. Seitz and S. D. M. White},
journal= {arXiv preprint arXiv:astro-ph/0102330},
year = {2009}
}
Comments
8 pages, 7 figures. accepted for publication in A&A