FIRSST : Far-Infrared Spectroscopy Space Telescope
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.
Authors
- Paul Grimes (ORCID: https://orcid.org/0000-0001-9292-6297)
- Meredith A. MacGregor (ORCID: https://orcid.org/0000-0001-7891-8143)
- A. Baryshev (ORCID: https://orcid.org/0000-0003-1319-0440)
- Ronald J. Vervack (ORCID: https://orcid.org/0000-0002-8227-9564)
- Asantha Cooray
- Martina Wiedner (ORCID: https://orcid.org/0000-0003-3912-7095)
Institutions
- Johns Hopkins University (US)
- Smithsonian Astrophysical Observatory (US)
- University of California, Irvine (US)
- Observatoire de Paris (FR)
Publication Details
- Published
- 2024-08-16
- DOI
- https://doi.org/10.1117/12.3020666
- Primary Topic
- Calibration and Measurement Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00