The Mid-Infrared Instrument for the James Webb Space Telescope, VI: The Medium Resolution Spectrometer
By M. Wells, J. Pel, A. Glasse, G. Wright, Gabby Aitink-Kroes, R. Azzollini, S. Beard, B. Brandl, A. Gallie, V. Geers and 28 more. 2015
153 citations recorded by the source corpus.
We describe the design and performance of the Medium Resolution Spectrometer (MRS) for the JWST-MIRI instrument. The MRS incorporates four coaxial spectral channels in a compact opto-mechanical layout that generates spectral images over fields of view up to 7.7 × 7.7″ in extent and at spectral resolving powers ranging from 1300 to 3700. Each channel includes an all-reflective integral field unit (IFU): an “image slicer” that reformats the input field for presentation to a grating spectrometer. Two 1024 × 1024 focal plane detector arrays record the output spectral images with an instantaneous spectral coverage of approximately one third of the full wavelength range of each channel. The full 5–28.5 μm spectrum is then obtained by making three exposures using gratings and pass-band-determining filters that are selected using just two three-position mechanisms. The expected on-orbit optical performance is presented, based on testing of the MIRI Flight Model and including spectral and spatial coverage and resolution. The point spread function of the reconstructed images is shown to be diffraction limited and the optical transmission is shown to be consistent with the design expectations.
Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Instrumentation
View Paper: https://www.semanticscholar.org/paper/cac82e4f4bfe215dc354523703bb3413be6d8470
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In Astronomy and Astrophysics
- L. Hernquist
- P. Hopkins
- M. Franx
- P. V. van Dokkum
- Christopher J. Conselice
- G. Illingworth
- C. Conroy
- R. Bouwens
In Atomic and Molecular Physics, and Optics
- Remi Soummer
- L. Pueyo
- L. Ferrarese
- R. P. van der Marel
- Th. Henning
- C. Willmer
- Jay Anderson
- Daniel J. Eisenstein
In Instrumentation
- M. Franx
- P. V. van Dokkum
- G. Illingworth
- R. Bouwens
- Christopher J. Conselice
- Richard S. Ellis
- I. Labbé
- L. Hernquist
Citations in the corpus
- The Mid-infrared Instrument for JWST and Its In-flight Performance (2023, methodology): “An expected “feature” of the MRS spectra (Wells et al. 2015) is that they show strong fringing due to interference effects and reflections off the internal structures, such as the buried contact.”
- The James Webb Space Telescope Mission (2023, background): “MIRI medium-resolution spectroscopy (MRS Wells et al. 2015) provides integral-field spectroscopy over the full 5 μm to 28 μm MIRI wavelength range.”