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

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

2001-10-23

arxiv.org/abs/astro-ph/0110521v1

Astronomy and Astrophysics

Astrophysics

33 pages, 11 figures. Accepted to PASP. For slightly better, color versions of Figs 1-3, see http://nene.as.utexas.edu/richter

Scientific paper

10.1086/338730

We discuss the design and performance of TEXES, the Texas Echelon Cross Echelle Spectrograph. TEXES is a mid-infrared (5-25 um) spectrograph with several operating modes: high-resolution, cross-dispersed with a resolving power 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 a 25 by 25" field of view on a 3m telescope. TEXES has been used at the McDonald Observatory 2.7m and the IRTF 3m telescopes, and has proven to be both sensitive and versatile.

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