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Proceedings Paper

Author(s): Francisco Diego; Roger F. Griffin; Juan Echevarria; Richard G. Bingham; David D. Walker
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Paper Abstract

The optical design and operation of the Coravel direct-correlation spectrograph system used to measure stellar radial velocities at the University of Cambridge 36-inch telescope, are described. The optical layout of the Cambridge Coravel is similar to that of the Coravels at the Observatoire de Haute Provence and ESO, comprising an echelle grating and a prism cross-disperser working in double pass. Particular attention is given to the calibration and scanning systems, the collimator-echelle-camera assembly, the mask and mask holder, the microprocessor-controlled photomultiplier detection system, the control and user interface, and the observing procedure. Diagrams, photographs, and sample observational data are included.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19129
Show Author Affiliations
Francisco Diego, Univ. College London (United Kingdom)
Roger F. Griffin, Univ. of Cambridge (United Kingdom)
Juan Echevarria, Univ. College London (Spain)
Richard G. Bingham, Univ. College London and Royal (United Kingdom)
David D. Walker, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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