FIRSST : Far-Infrared Spectroscopy Space Telescope

Andrey M. Baryshev; Martina Wiedner; Paul Grimes; Ron Vervack; Asantha Cooray; Meredith MacGregor

doi:10.1117/12.3020666

17 August 2024 FIRSST : Far-Infrared Spectroscopy Space Telescope

Andrey M. Baryshev, Martina Wiedner, Paul Grimes, Ron Vervack, Asantha Cooray, Meredith MacGregor

Proceedings Volume PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; PC131020L (2024) https://doi.org/10.1117/12.3020666
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The Heterodyne Spectrometer Instrument (HSI) is one of two instruments designed for the recently submitted Far-IR Spectroscopy Space Satellite proposal to NASA. HSI stands out as the first heterodyne array receiver for a space mission. It covers a broad bandwidth range between 150 and 600 microns in just three bands, each equipped with two 5-pixel arrays. HSI facilitates dual-polarization, multi-pixel, and multi-frequency observations on a satellite, achieved through careful design and the utilization of low-heat dissipating, low-power, yet high TRL components. We provide details of the optical design and present a solution for thermal/background compatibility between the direct detector and heterodyne instrument.

Conference Presentation

Citation Download Citation

Andrey M. Baryshev, Martina Wiedner, Paul Grimes, Ron Vervack, Asantha Cooray, and Meredith MacGregor "FIRSST : Far-Infrared Spectroscopy Space Telescope", Proc. SPIE PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, PC131020L (17 August 2024); https://doi.org/10.1117/12.3020666

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