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Proceedings Paper

Preflight performance of the Echelon-Cross-Echelle spectrograph for SOFIA
Author(s): Curtis DeWitt; Matthew J. Richter; Mark E. McKelvey; Andreas Seifahrt; Michael Case; Joseph Barthel; Peter Zell; Dana Lynch
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Paper Abstract

The Echelon-Cross-Echelle Spectrograph (EXES) is one of the first generation instruments for the Stratospheric Observatory for Infrared Astronomy (SOFIA). The primary goal of EXES is to provide high-resolution, cross-dispersed spectroscopy, with resolutions of 50,000-100,000 and wavelength coverage of 0.5-1.5% between 4.5 μm and 28.3 μm. EXES will also have medium (R=5000-25000) and low (R=1500-4000) modes available, as well as a target acquisition imaging mode and a pupil-imaging mode for alignment testing. EXES is scheduled for commissioning flights in February 2014. It will be available to the public for shared-risk observations in SOFIA’s Cycle 2. Here we give an overview of the design and capabilities of EXES as well as its laboratory performance to date.

Paper Details

Date Published: 5 October 2012
PDF: 10 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84461A (5 October 2012); doi: 10.1117/12.925419
Show Author Affiliations
Curtis DeWitt, Univ. of California, Davis (United States)
NASA Ames Research Ctr. (United States)
Matthew J. Richter, Univ. of California, Davis (United States)
Mark E. McKelvey, NASA Ames Research Ctr. (United States)
Andreas Seifahrt, The Univ. of Chicago (United States)
Michael Case, Univ. of California, Davis (United States)
Joseph Barthel, Univ. of California, Davis (United States)
Peter Zell, NASA Ames Research Ctr. (United States)
Dana Lynch, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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