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Focal Reducer Techniques for Direct Imaging and Field Spectroscopy with Large Telescopes*

Published online by Cambridge University Press:  12 April 2016

Edward H. Geyer  and
Bruno Nelles
Edward H. Geyer
Affiliation:
Observatorium Hoher List, der Universitätssternwarte Bonn, D-5568 Daun, FRG
Bruno Nelles
Affiliation:
Observatorium Hoher List, der Universitätssternwarte Bonn, D-5568 Daun, FRG

Abstract

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To exploit the full effectiveness of large ground based telescopes, the focal reducer technique can be applied very adequately. We review recent Hoher List observatory developments of observing techniques for direct imaging, field spectroscopy with multi-slit and masking methods for background supression and double-grism arrangements (heliometer principle)for absolute radial velocity determinations with a focal reducer field spectrograph.

Type
IV. Instrumentation - Components
Information
International Astronomical Union Colloquium , Volume 79: Very Large Telescopes, their Instrumentation and Programs , 1984 , pp. 575 - 583
Copyright
Copyright © ESO 1984

Footnotes

*

Dedicated to Professor Dr.Ch.Fehrenbach on the occasion of his 70th birthday, 1984 April 29

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