TEXES: A Sensitive High‐Resolution Grating Spectrograph for the Mid‐Infrared | Zendy

J. H. Lacy | Zendy; Matthew J. Richter | Zendy; T. K. Greathouse | Zendy; D. T. Jaffe | Zendy; Qingfeng Zhu | Zendy

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TEXES: A Sensitive High‐Resolution Grating Spectrograph for the Mid‐Infrared

Author(s) -

J. H. Lacy,

Matthew J. Richter,

T. K. Greathouse,

D. T. Jaffe,

Qingfeng Zhu

Publication year - 2002

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/338730

Subject(s) - spectrograph , spectral resolution , telescope , physics , observatory , optics , slit , infrared , field of view , grating , pixel , resolution (logic) , remote sensing , near infrared spectroscopy , astronomy , spectral line , geology , computer science , artificial intelligence

We discuss the design and performance of TEXES, the Texas Echelon CrossEchelle Spectrograph. TEXES is a mid-infrared (5-25 um) spectrograph withseveral operating modes: high-resolution, cross-dispersed with a resolvingpower of R=100,000, 0.5% spectral coverage, and a ~1.5 by 8" slit;medium-resolution long-slit with R~15,000, 0.5% coverage, and a ~1.5 by 45"slit; low-resolution long-slit with (delta lambda)~0.004 um, 0.25 um coverage,and a ~1.5 by 45" slit; and source acquisition imaging with 0.33" pixels and a25 by 25" field of view on a 3m telescope. TEXES has been used at the McDonaldObservatory 2.7m and the IRTF 3m telescopes, and has proven to be bothsensitive and versatile.

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