Optical design of the all-reflecting coudé spectrograph of the Canada-France-Hawaii telescope.

Details Optical design of the all-reflecting coudé spectrograph of the Canada-France-Hawaii telescope. Optical design of the all-reflecting coudé spectrograph of the Canada-France-Hawaii telescope.

Jan 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..445..530r&link_type=abstract

Instrumentation in astronomy V, p. 530 - 534

Astronomy and Astrophysics

Astronomy

5

Image Slicers, Optical Design:Spectrographs, Spectrographs:Optical Design

Scientific paper

Two spectrographs were planned for the coudé focus of the CFHT, the first having a F/7.4 camera and a large (76 cm) plateholder, the second having a faster camera, F/3.7, and a smaller focal surface. The F/7.4 spectrograph began operation in 1981 and its optical design, including proposed additions, is described. High transmission is possible because the spectrograph has few elements, some of which can have high reflectance coatings, and because it is designed for use with image slicers with which it is equipped.

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