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

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

Research output: Contribution to journalArticle

35 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)686-695
Number of pages10
JournalPublications of the Astronomical Society of the Pacific
Volume127
Issue number953
DOIs
StatePublished - Jul 1 2015

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infrared instruments
James Webb Space Telescope
flight
sensitivity
signal-to-noise ratio
spectrometer
detectors
budgets
signal to noise ratios
spectrometers
orbits
photons
estimates
detector
budget

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

The mid-infrared instrument for the James Webb Space Telescope, IX : Predicted sensitivity. / Glasse, Alistair; Rieke, George H.; Bauwens, E.; García-Marín, Macarena; Ressler, M. E.; Rost, Steffen; Tikkanen, T. V.; Vandenbussche, B.; Wright, G. S.

In: Publications of the Astronomical Society of the Pacific, Vol. 127, No. 953, 01.07.2015, p. 686-695.

Research output: Contribution to journalArticle

Glasse, A, Rieke, GH, Bauwens, E, García-Marín, M, Ressler, ME, Rost, S, Tikkanen, TV, Vandenbussche, B & Wright, GS 2015, 'The mid-infrared instrument for the James Webb Space Telescope, IX: Predicted sensitivity', Publications of the Astronomical Society of the Pacific, vol. 127, no. 953, pp. 686-695. https://doi.org/10.1086/682259
Glasse, Alistair ; Rieke, George H. ; Bauwens, E. ; García-Marín, Macarena ; Ressler, M. E. ; Rost, Steffen ; Tikkanen, T. V. ; Vandenbussche, B. ; Wright, G. S. / The mid-infrared instrument for the James Webb Space Telescope, IX : Predicted sensitivity. In: Publications of the Astronomical Society of the Pacific. 2015 ; Vol. 127, No. 953. pp. 686-695.
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