Astronomy and Astrophysics – Astronomy
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esoc...17..109m&link_type=abstract
IN: Workshop on ESO's Very Large Telescope, Cargese, Corse, France, May 16-19, 1983, Proceedings (A84-48051 23-89). Garching, We
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Infrared Astronomy, Infrared Spectroscopy, Infrared Telescopes, Infrared Spectrometers, Signal To Noise Ratios, Spaceborne Telescopes, Spectral Resolution
Scientific paper
Attention is given to factors influencing the signal-to-noise ratios achievable in Very Large Telescope-based IR spectroscopy. Optimum performance in the thermal IR requires not only a low emissivity telescope, but one that is on a cold, dry site with excellent seeing. The core spectrometer will probably be a cooled grating/array instrument. Matching problems are not anticipated with telescopes in the 8-10 m-diameter class. The telescope image quality (on axis), and the tracking/guiding accuracy, must be compatible with the use of narrow slits.
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