High-resolution mid-infrared spectroscopy with EXES and SOFIA

Matthew J. Richter; John H. Lacy; Qingfeng Zhu; Daniel T. Jaffe; Thomas K. Greathouse; Margaret Moerchen; Douglas J. Mar; Claudia Knez

doi:10.1117/12.458628

3 March 2003 High-resolution mid-infrared spectroscopy from SOFIA using EXES

Matthew J. Richter, John H. Lacy, Qingfeng Zhu, Daniel T. Jaffe, Thomas K. Greathouse, Margaret Moerchen, Douglas J. Mar, Claudia Knez

Author Affiliations +

Proceedings Volume 4857, Airborne Telescope Systems II; (2003) https://doi.org/10.1117/12.458628
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The Stratospheric Observatory for Infrared Astronomy (SOFIA) will provide new opportunities for high spectral resolution observations in the mid-infrared. To take advantage of these opportunities, we are developing EXES, the Echelon-Cross-Echelle Spectrograph. EXES will operate from 4.5 microns to 28.5 microns and achieve a velocity resolution of 3 km/s for λ < 10 μm. EXES will be a versatile instrument with three spectroscopic modes: cross-dispersed with R~10⁵; long-slit with R~10⁴; and long-slit with R~3000. The unique aspect of EXES is the high-resolution capability provided by a 1 meter echelon grating and a 256 by 256 low-background Si:As IBC detector. Much of the design and operation of EXES has already been validated by the performance of a very similar ground-based instrument, the Texas Echelon-Cross-Echelle Spectrograph (TEXES). We present here a summary of the EXES design and current status; a brief description of ground-based, high spectral resolution, mid-infrared results; and a look ahead to the possible science using SOFIA and EXES.

Citation Download Citation

Matthew J. Richter, John H. Lacy, Qingfeng Zhu, Daniel T. Jaffe, Thomas K. Greathouse, Margaret Moerchen, Douglas J. Mar, and Claudia Knez "High-resolution mid-infrared spectroscopy from SOFIA using EXES", Proc. SPIE 4857, Airborne Telescope Systems II, (3 March 2003); https://doi.org/10.1117/12.458628

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