Preflight performance of the Echelon-Cross-Echelle spectrograph for SOFIA

Curtis DeWitt; Matthew J. Richter; Mark E. McKelvey; Andreas Seifahrt; Michael Case; Joseph Barthel; Peter Zell; Dana Lynch

doi:10.1117/12.925419

5 October 2012 Preflight performance of the Echelon-Cross-Echelle spectrograph for SOFIA

Curtis DeWitt, Matthew J. Richter, Mark E. McKelvey, Andreas Seifahrt, Michael Case, Joseph Barthel, Peter Zell, Dana Lynch

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84461A (2012) https://doi.org/10.1117/12.925419
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Curtis DeWitt, Matthew J. Richter, Mark E. McKelvey, Andreas Seifahrt, Michael Case, Joseph Barthel, Peter Zell, and Dana Lynch "Preflight performance of the Echelon-Cross-Echelle spectrograph for SOFIA", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84461A (5 October 2012); https://doi.org/10.1117/12.925419

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