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Proceedings Paper

Design of a wide field far-UV spectrometer for a mission to Mars
Author(s): Edward Wishnow; Tim Miller; Matthew Fillingim; Jerry Edelstein; Robert Lillis; Eric Korpela; Scott England; William Van Shourt; Oswald Siegmund; Jason McPhate; Sasha Courtade; David Curtis; Justin Deighan; Michael Chaffin; Abdullah Saif Harmoul; Hessa Rashid Al Matroushi
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Paper Abstract

An imaging spectrometer for observations of the Martian corona and the Martian thermosphere is presented. The corona extends over 10 Martian radii and its measurement requires observations over a very wide field. The spectrometer covers the wavelength region 120-170 nm where this band includes coronal spectral lines of hydrogen Lyman alpha and oxygen, and thermospheric spectral lines from atomic oxygen and carbon and the 4th positive band of CO. Stellar occultation observations will provide atmospheric density measurements. These scientific requirements are fulfilled by an Offner-type spectrometer with a 110 degree instantaneous field of view and no moving mechanisms. Both the spectral and imaging resolution vary across the field, from higher resolution across the planet body, to lower resolution required at the diffuse outer parts of the corona. This Offner-type design has not been previously used in the FUV.

Paper Details

Date Published: 27 July 2016
PDF: 7 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 990538 (27 July 2016); doi: 10.1117/12.2233512
Show Author Affiliations
Edward Wishnow, Space Sciences Lab. (United States)
Tim Miller, Space Sciences Lab. (United States)
Matthew Fillingim, Space Sciences Lab. (United States)
Jerry Edelstein, Space Sciences Lab. (United States)
Robert Lillis, Space Sciences Lab. (United States)
Eric Korpela, Space Sciences Lab. (United States)
Scott England, Space Sciences Lab. (United States)
William Van Shourt, Space Sciences Lab. (United States)
Oswald Siegmund, Space Sciences Lab. (United States)
Jason McPhate, Space Sciences Lab. (United States)
Sasha Courtade, Space Sciences Lab. (United States)
David Curtis, Space Sciences Lab. (United States)
Justin Deighan, Univ. of Colorado, Boulder (United States)
Michael Chaffin, Univ. of Colorado, Boulder (United States)
Abdullah Saif Harmoul, Mohammed bin Rashid Space Ctr. (United Arab Emirates)
Hessa Rashid Al Matroushi, Mohammed bin Rashid Space Ctr. (United Arab Emirates)

Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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