Pandeia is the exposure time calculator (ETC) system developed for the James Webb Space Telescope (JWST) that will be used for creating JWST proposals. It includes a simulation-hybrid Python engine that calculates the two-dimensional pixel-by-pixel signal and noise properties of the JWST instruments. This allows for appropriate handling of realistic point spread functions, MULTIACCUM detector readouts, correlated detector readnoise, and multiple photometric and spectral extraction strategies. Pandeia includes support for all the JWST observing modes, including imaging, slitted/slitless spectroscopy, integral field spectroscopy, and coronagraphy. Its highly modular, data-driven design makes it easily adaptable to other observatories. An implementation for use with WFIRST is also available.
@article{arxiv.1707.02202,
title = {Pandeia: A Multi-mission Exposure Time Calculator for JWST and WFIRST},
author = {Klaus M. Pontoppidan and Timothy E. Pickering and Victoria G. Laidler and Karoline Gilbert and Christopher D. Sontag and Christine Slocum and Mark J. Sienkiewicz and Christopher Hanley and Nicholas M. Earl and Laurent Pueyo and Swara Ravindranath and Diane M. Karakla and Massimo Robberto and Alberto Noriega-Crespo and Elizabeth A. Barker},
journal= {arXiv preprint arXiv:1707.02202},
year = {2018}
}