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Proceedings Paper

The Origins Survey Spectrometer (OSS): a far-IR discovery machine for the Origins Space Telescope
Author(s): C. Matt Bradford; Bruce Cameron; Bradley Moore; Edward Amatucci; Damon Bradley; James Corsetti; David Leisawitz; S. Harvey Moseley; Johannes Staguhn; James Tuttle; Ari Brown; Alexandra Pope; Lee Armus; Margaret Meixner; Klaus Pontoppidan
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Paper Abstract

The OSS on the Origins Space Telescope is designed to decode the cosmic history of nucleosynthesis, star formation, and supermassive black hole growth with wide-area spatial-spectral 3-D surveys across the full 25 to 590 micron band. Six wideband grating modules combine to cover the full band at R=300, each couples a long slit with 60-190 beams on the sky. OSS will have a total of 120,000 background-limited detector pixels in the six 2-D arrays which provide spatial and spectral coverage. The suite of grating modules can be used for pointed observations of targets of interest, and are particularly powerful for 3-D spectral spectral surveys. To chart the transition from interstellar material, particularly water, to planetary systems, two high-spectral-resolution modes are included. The first incorporates a Fourier-transform spectrometer (FTS) in front of the gratings providing resolving power of 25,000 (δv = 12 km/s) at 179 µm to resolve water emission in protoplanetary disk spectra. The second boosts the FTS capability with an additional etalon (Fabry-Perot interferometer) to provide 2 km/s resolution in this line to enable detailed structural studies of disks in the various water and HD lines. Optical, thermal, and mechanical designs are presented, and the system approach to the detector readout enabling the large formats is described.

Paper Details

Date Published: 1 August 2018
PDF: 17 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 1069818 (1 August 2018); doi: 10.1117/12.2314049
Show Author Affiliations
C. Matt Bradford, Jet Propulsion Lab. (United States)
Bruce Cameron, Jet Propulsion Lab. (United States)
Bradley Moore, Jet Propulsion Lab. (United States)
Edward Amatucci, NASA Goddard Space Flight Ctr. (United States)
Damon Bradley, NASA Goddard Space Flight Ctr. (United States)
James Corsetti, NASA Goddard Space Flight Ctr. (United States)
David Leisawitz, NASA Goddard Space Flight Ctr. (United States)
S. Harvey Moseley, NASA Goddard Space Flight Ctr. (United States)
Johannes Staguhn, NASA Goddard Space Flight Ctr. (United States)
James Tuttle, NASA Goddard Space Flight Ctr. (United States)
Ari Brown, NASA Goddard Space Flight Ctr. (United States)
Alexandra Pope, Univ. of Massachusetts Amherst (United States)
Lee Armus, IPAC, Caltech (United States)
Margaret Meixner, Space Telescope Science Institute (United States)
Klaus Pontoppidan, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 10698:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Makenzie Lystrup; Howard A. MacEwen; Giovanni G. Fazio; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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