Physics – Optics
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2476...46w&link_type=abstract
Proc. SPIE Vol. 2476, p. 46-55, Fiber Optics in Astronomical Applications, Samuel C. Barden; Ed.
Physics
Optics
2
Scientific paper
The prime focus of the William Herschel telescope (WHT) provides a field of one degree which is to be used for fiber spectroscopy. The WYFFOS spectrograph, based on a Baranne white pupil design, is located on one of the Nasmyth platforms of the telescope and is fed from prime focus by 126, 26 meter long fibers. The system is designed for a wavelength range of 350 nm to 1.1 microns using both transmission and reflection gratings. This paper describes the integration and testing of the spectrograph undertaken in the laboratory. The image quality and spectral resolving power have been measured. The scattered light and amount of cross-talk between adjacent fibers has been assessed. The provision of calibration illumination and facilities for back illumination of the fibers, a requirement needed by the fiber positioner, is discussed.
Bingham Richard G.
Ferneyhough Nicholas K.
Gellatly David W.
King David L.
Oates Anthony P.
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