Infrared spectrometer/imager for the ESO VLT

Details Infrared spectrometer/imager for the ESO VLT Infrared spectrometer/imager for the ESO VLT

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1235....2m&link_type=abstract

IN: Instrumentation in astronomy VII; Proceedings of the Meeting, Tucson, AZ, Feb. 13-17, 1990 (A91-29601 11-35). Bellingham, WA

Physics

Optics

Cryogenic Equipment, Infrared Imagery, Infrared Photography, Infrared Spectrometers, Reflecting Telescopes, Cameras, Cassegrain Optics, Chile, Focal Plane Devices, Pixels

Scientific paper

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.

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