Infrared spectrometer/imager for the ESO VLT

Alan F. M. Moorwood; Bernard Delabre

doi:10.1117/12.19065

Abstract

The design of a multimode IR spectrometer/imager for the ESO VLT is discussed. The system has two cameras optimized separately for the 1-2.5-micron and 2.5-5.0-micron spectral regions, used to either view the on-axis focal plane for direct imaging or to reimage the intermediate spectrum formed by a grating spectrometer whose input slit is located a few arcmin off axis. The characteristics of the imaging and the spectrometry are described, and a diagram of the opticaL layout of the system is presented together with the spot diagrams for the camera objectives and for the combined spectrometer/camera.

Citation Download Citation

Alan F. M. Moorwood, Alan F. M. Moorwood, Bernard Delabre, Bernard Delabre, "Infrared spectrometer/imager for the ESO VLT", Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19065; https://doi.org/10.1117/12.19065

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