The mid-infrared instrument for the James Webb Space Telescope, IX: Predicted sensitivity

Alistair Glasse; G. H. Rieke; E. Bauwens; Macarena García-Marín; M. E. Ressler; Steffen Rost; T. V. Tikkanen; B. Vandenbussche; G. S. Wright

doi:10.1086/682259

The mid-infrared instrument for the James Webb Space Telescope, IX: Predicted sensitivity

Alistair Glasse, G. H. Rieke, E. Bauwens, Macarena García-Marín, M. E. Ressler, Steffen Rost, T. V. Tikkanen, B. Vandenbussche, G. S. Wright

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87 Scopus citations

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.

Original language	English (US)
Pages (from-to)	686-695
Number of pages	10
Journal	Publications of the Astronomical Society of the Pacific
Volume	127
Issue number	953
DOIs	https://doi.org/10.1086/682259
State	Published - Jul 1 2015

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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title = "The mid-infrared instrument for the James Webb Space Telescope, IX: Predicted sensitivity",

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.",

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T1 - The mid-infrared instrument for the James Webb Space Telescope, IX

T2 - Predicted sensitivity

AU - Glasse, Alistair

AU - Rieke, G. H.

AU - Bauwens, E.

AU - García-Marín, Macarena

AU - Ressler, M. E.

AU - Rost, Steffen

AU - Tikkanen, T. V.

AU - Vandenbussche, B.

AU - Wright, G. S.

PY - 2015/7/1

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AB - 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.

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The mid-infrared instrument for the James Webb Space Telescope, IX: Predicted sensitivity

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