Optical design for the 5-to-28-um NGST MIRI spectroscopy channel (MIRI-S)

Martyn Wells; Jan-Willem Pel; Anton Schoenmaker; Gillian S. Wright; Peter R. Hastings; Robert Content; Tully Peacocke

doi:10.1117/12.461633

5 March 2003 Optical Design for the 5-28μm NGST MIRI spectroscopy channel (MIRI-S)

Martyn Wells, Jan-Willem Pel, Anton Schoenmaker, Gillian S. Wright, Peter R. Hastings, Robert Content, Tully Peacocke

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461633
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

MIRI, the mid-IR instrument for NGST is being provided by a collaboration between a consortium of European institutes, ESA, NASA, JPL and US scientists, with the Europeans responsible for the optics module. The instrument will provide diffraction limited imaging and spectroscopic capability over the 5-28μm region with unprecedented sensitivity. In this paper we describe the current optical design of the medium resolution spectroscopy channel (MIRI-S). This uses a novel arrangement of dichroics, image slicers and spectrometers to optimise the division of a limited number of detector pixels between spatial and spectral information whilst working within the tight mass and volume constraints imposed by a space mission. We also present our design for reflective image slicers that are adapted properly for diffraction limited performance to provide a high throughput over the full wavelength range of the instrument.

Citation Download Citation

Martyn Wells, Jan-Willem Pel, Anton Schoenmaker, Gillian S. Wright, Peter R. Hastings, Robert Content, and Tully Peacocke "Optical Design for the 5-28μm NGST MIRI spectroscopy channel (MIRI-S)", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461633

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