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Title: The Mid-Infrared Instrument for the James Webb Space Telescope, IX: Predicted Sensitivity
Authors: Glasse, A.
Rieke, G. H.
Bauwens, E.
Garcia-Marin, M.
Ressler, M. E.
Rost, S.
Tikkanen, Tuomo Ville
Vandenbussche, B.
Wright, G. S.
First Published: 24-Jun-2015
Publisher: The University of Chicago Press on behalf of the Astronomical Society of the Pacific
Citation: Publications of the Astronomical Society of the Pacific, 2015, 127 (953), pp. 686-695
Abstract: We present an estimate of the performance that will be achieved during on-orbit operations of the JWST mid-infrared instrument, MIRI. The efficiency of the main imager and spectrometer systems in detecting photons from an astronomical target are presented, based on measurements at subsystem and instrument-level testing, with the end-to-end transmission budget discussed in some detail. The brightest target fluxes that can be measured without saturating the detectors are provided. The sensitivity for long-duration observations of faint sources is presented in terms of the target flux required to achieve a signal-to-noise ratio of 10 after a 10,000 s observation. The algorithms used in the sensitivity model are presented, including the understanding gained during testing of the MIRI flight model and flight-like detectors.
DOI Link: 10.1086/682259
ISSN: 0004-6280
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2015. The Astronomical Society of the Pacific. All rights reserved.
Description: Deposited with reference to the Societies open access archiving policy.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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