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The Mid-Infrared Instrument for the James Webb Space Telescope, IX: Predicted Sensitivity

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journal contribution
posted on 2015-09-23, 14:44 authored by A. Glasse, G. H. Rieke, E. Bauwens, M. Garcia-Marin, M. E. Ressler, S. Rost, Tuomo Ville Tikkanen, B. Vandenbussche, G. S. Wright
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.

History

Citation

Publications of the Astronomical Society of the Pacific, 2015, 127 (953), pp. 686-695

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

  • VoR (Version of Record)

Published in

Publications of the Astronomical Society of the Pacific

Publisher

The University of Chicago Press on behalf of the Astronomical Society of the Pacific

issn

0004-6280

Acceptance date

2015-05-01

Copyright date

2015

Available date

2015-09-23

Publisher version

http://www.jstor.org/stable/info/10.1086/682259

Notes

Deposited with reference to the Societies open access archiving policy.

Language

en

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