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Basic principles in spectro-imaging Foreword on Marseilles Observatory - 3D spectroscopic methods

Published online by Cambridge University Press:  12 April 2016

G. Courtès*
Affiliation:
Observatoire de Marseille, 2 Place Le Verrier, 13248 Marseille Cedex 4, France, and Laboratoire d’Astronomie Spatiale du CNRS, Traverse du Siphon, 13012 Marseille, France

Abstract

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Focal reducers provide efficient solutions to the drawbacks introduced by the large focal length of direct foci on large modern telescopes. They house a variety of spectroscopic devices, and lead to various families of spectroimagers. Rational filterings, BPM irmltisimultaneous bandwidths, extreme spectral resolution of the field scanner interferometers (Tully’s first design, Taurus, Cigale) and their image reconstruction, as well as the possibility to obtain the spectra of all image elements of the field owing to the new (Tiger and Silfid) integral field spectrographs sometimes combined with Fabry Perot Interferometers (Pytheas) are now within reach. In classical spectrography the focal reducer leads to the optimized size Baranne’s white pupil spectrograph.

Information

Type
1. Basic Principles, Focal Reducers
Copyright
Copyright © Astronomical Society of the Pacific 1995