EXES: a progress report on the development of a high-resolution mid-infrared grating spectrograph for SOFIA

Matthew J. Richter; John H. Lacy; Daniel T. Jaffe; Thomas K. Greathouse; Mary Kay Hemenway

doi:10.1117/12.389133

20 June 2000 EXES: a progress report on the development of a high-resolution mid-infrared grating spectrograph for SOFIA

Matthew J. Richter, John H. Lacy, Daniel T. Jaffe, Thomas K. Greathouse, Mary Kay Hemenway

Author Affiliations +

Proceedings Volume 4014, Airborne Telescope Systems; (2000) https://doi.org/10.1117/12.389133
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

We are developing a high spectral resolution grating spectrograph as a PI instrument for the Stratospheric Observatory for Infrared Astronomy. The Echelon-Cross- Echelle Spectrograph (EXES) will operate at 5.5 - 28.5 micrometers in three spectroscopic modes: R approximately 10⁵, 2 X 10⁴, and 4000. We use an echelon, a coarsely ruled, steeply blazed diffraction grating to achieve high resolution. Cross-dispersion is done with an echelle used at relatively low order. The detector is a 256 X 256 pixel Si:As IBC array. A very similar instrument, the Texas Echelon-Cross-Echelle Spectrograph (TEXES), has had a successful telescope run at the McDonald Observatory. We give here a progress report on the design of EXES and the status of TEXES.

Citation Download Citation

Matthew J. Richter, John H. Lacy, Daniel T. Jaffe, Thomas K. Greathouse, and Mary Kay Hemenway "EXES: a progress report on the development of a high-resolution mid-infrared grating spectrograph for SOFIA", Proc. SPIE 4014, Airborne Telescope Systems, (20 June 2000); https://doi.org/10.1117/12.389133

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