Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..627..339d&link_type=abstract
IN: Instrumentation in astronomy VI; Proceedings of the Meeting, Tucson, AZ, Mar. 4-8, 1986. Part 1 (A87-36376 15-35). Bellingha
Astronomy and Astrophysics
Astronomy
42
Multispectral Tracking Telescopes, Phased Arrays, Reflecting Telescopes, Spectrographs, Europe, Filter Wheel Infrared Spectrometers, Gratings (Spectra), Image Resolution, Spectral Resolution
Scientific paper
The 3000-10,000-A wavelength-region sensor that is to be used at one of the two Nasmyth foci of the ESO's New Technology Telescope, designated the ESO Multi-Mode Instrument (EMMI), will conduct multiobject and long slit spectroscopy over a large field. The EMMI optical configuration has as its goals the reduction of the number of lenses and the maximization of instrument throughput. Optical subsystems of the EMMI include a collimator, a transfer collimator in the red bandpass, and red and blue cameras. In addition to direct imaging, the instrument can be used in low, medium, and high dispersion modes by means of gratings, grisms, etc.; resolving powers lie in the 100-40,000 range, with rapid changeover among the various modes obtainable by remote control.
Dekker Hans
Delabre Bernard
Dodorico Sandro
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