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Origins Survey Spectrometer (OSS): a far-IR discovery machine for the Origins Space Telescope

Bradford, C. Matt and Cameron, Bruce and Moore, Bradley and Amatucci, Edward and Bradley, Damon and Corsetti, James and Leisawitz, David and Moseley, S. Harvey and Staguhn, Johannes and Tuttle, James and Brown, Ari and Pope, Alexandra and Armus, Lee and Meixner, Margaret and Pontoppidan, Klaus (2018) Origins Survey Spectrometer (OSS): a far-IR discovery machine for the Origins Space Telescope. In: Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. Proceedings of SPIE. No.10698. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1069818. ISBN 9781510619494.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Bradford, C. Matt0000-0001-5261-7094
Staguhn, Johannes0000-0002-8437-0433
Pope, Alexandra0000-0001-8592-2706
Armus, Lee0000-0003-3498-2973
Pontoppidan, Klaus0000-0001-7552-1562
Additional Information:© 2018 Society of Photo-optical Instrumentation Engineers (SPIE). We thank the Integrated Design Lab (IDL) at Goddard for their work on the OSS study, and the OST science and technology definition team for help in developing science cases and defining instrument parameters. We also thank Willem Jellema and David Naylor for useful discussions about the Martin-Puplett Interferometer. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Series Name:Proceedings of SPIE
Issue or Number:10698
Record Number:CaltechAUTHORS:20181207-101453271
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Official Citation: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, "The Origins Survey Spectrometer (OSS): a far-IR discovery machine for the Origins Space Telescope," Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 1069818 (1 August 2018); doi: 10.1117/12.2314049
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91567
Deposited By: Tony Diaz
Deposited On:07 Dec 2018 21:25
Last Modified:16 Nov 2021 03:42

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