The Mid-Infrared Instrument for the James Webb Space Telescope, VI: The Medium Resolution Spectrometer
Artikel i vetenskaplig tidskrift, 2015

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 x 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 x 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 mu m 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.

Temperature

Rmany

Thermal-Expansion Measurements

Optical Materials

Författare

M. Wells

Royal Observatory

J. W. Pel

Rijksuniversiteit Groningen

A. Glasse

Royal Observatory

G. S. Wright

Royal Observatory

G. Aitink-Kroes

R. Azzollini

Dublin Institute for Advanced Studies

Centro de Astrobiologia (CAB)

S. Beard

Royal Observatory

B. R. Brandl

Universiteit Leiden

A. Gallie

Royal Observatory

V. C. Geers

Dublin Institute for Advanced Studies

A. M. Glauser

Eidgenössische Technische Hochschule Zürich (ETH)

P. Hastings

Royal Observatory

T. Henning

Max Planck-institutet

R. Jager

Kay Justtanont

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

B. Kruizinga

Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO)

F. Lahuis

Universiteit Leiden

Netherlands Institute for Space Research (SRON)

D. Lee

Royal Observatory

I. Martinez-Delgado

Centro de Astrobiologia (CAB)

J. R. Martinez-Galarza

Universiteit Leiden

Harvard-Smithsonian Center for Astrophysics

M. Meijers

J. E. Morrison

University of Arizona

F. Muller

Max Planck-institutet

T. Nakos

Universiteit Gent

B. O'Sullivan

PO3 5PU

A. Oudenhuysen

P. Parr-Burman

Royal Observatory

E. Pauwels

R. R. Rohloff

Max Planck-institutet

E. Schmalzl

Universiteit Leiden

J. Sykes

University Of Leicester

M. P. Thelen

Jet Propulsion Laboratory, California Institute of Technology

E. F. van Dishoeck

Universiteit Leiden

B. Vandenbussche

KU Leuven

L. B. Venema

H. Visser

Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek (TNO)

Lbfm Waters

Netherlands Institute for Space Research (SRON)

Universiteit Van Amsterdam

D. Wright

Publications of the Astronomical Society of the Pacific

0004-6280 (ISSN) 1538-3873 (eISSN)

Vol. 127 953 646-664

Ämneskategorier

Astronomi, astrofysik och kosmologi

Infrastruktur

Onsala rymdobservatorium