2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2581We broadly discuss mid-infrared spectroscopy and detail our new high spectral resolution instrument, the Texas Echelon-cross-Echelle Spectrograph (TEXES).12 pages, 9 figures, to appear in ASP Conference Proceedings "Astronomical Instrumentation and the Birth and Growth of Astrophysics"Astrophysicstext