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Proceedings Paper

Camera Electronique Electrostatique De 40 Mm Associee Au Spectrographe Cassegrain Du Telescope C.F.H.
Author(s): M. DUchesne; C. Joubert; J. M. Le Flohic; B. Servan; G. Wlerick; A. Sellier; A. Baranne
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Paper Abstract

For maximum efficiency, the spectrograph and the receiver have been studied simultaneously, during all the phases of the project. The "Casshawec" spectrograph is used at the Cassegrain focus of the C.F.H. Telescope. The optical system is of the type called "a pupille blanche" (white pupil"). This system is luminous and also it is very convenient for electronographic receivers. The camera is similar to the electrostatic cameras already used, but with an increased diameter (40 mm), an electronic magnification of 0.6 and a plate holder containing 24 plates. The spectrograph equiped with the camera has been used succes-sfully on the sky, in March 1986. It has been possible to study extendedoobjects, with a slit having an height on the sky equal to 6', a dispersion of 21 Å/mm, at 0 0 4000 Å, and a resolution of 0,5 Å.

Paper Details

Date Published: 18 May 1987
PDF: 4 pages
Proc. SPIE 0702, International Topical Meeting on Image Detection and Quality, (18 May 1987); doi: 10.1117/12.966731
Show Author Affiliations
M. DUchesne, Observatoire De Paris (France)
C. Joubert, Observatoire de Paris (France)
J. M. Le Flohic, Observatoire de Paris (France)
B. Servan, Observatoire de Paris (France)
G. Wlerick, Observatoire de Paris (France)
A. Sellier, Observatoire de Paris (France)
A. Baranne, Observatoire de Marseille (France)

Published in SPIE Proceedings Vol. 0702:
International Topical Meeting on Image Detection and Quality
Lucien F. Guyot, Editor(s)

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