The WFIRST Galaxy Survey Exposure Time Calculator

Details The WFIRST Galaxy Survey Exposure Time Calculator The WFIRST Galaxy Survey Exposure Time Calculator

2012-04-23

arxiv.org/abs/1204.5151v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

44 pages. The current C source code and version history can be found at http://www.tapir.caltech.edu/~chirata/web/software/spa

Scientific paper

This document describes the exposure time calculator for the Wide-Field Infrared Survey Telescope (WFIRST) high-latitude survey. The calculator works in both imaging and spectroscopic modes. In addition to the standard ETC functions (e.g. background and S/N determination), the calculator integrates over the galaxy population and forecasts the density and redshift distribution of galaxy shapes usable for weak lensing (in imaging mode) and the detected emission lines (in spectroscopic mode). The source code is made available for public use.

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