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The Mid-Infrared Instrument for the James Webb Space Telescope, IX: Predicted Sensitivity
journal contributionposted 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.
CitationPublications 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
- VoR (Version of Record)