A faint object spectrograph for the William Herschel Telescope

Details A faint object spectrograph for the William Herschel Telescope A faint object spectrograph for the William Herschel Telescope

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238..603a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 15, 1989, p. 603-619.

Physics

Optics

34

Charge Coupled Devices, Faint Object Camera, High Dispersion Spectrographs, Schmidt Cameras, Telescopes, Cassegrain Optics, Pixels

Scientific paper

The design and performance of the faint object spectrograph on the 4.2-m William Herschel Telescope (La Palma) are discussed. The collimatorless design provides high efficiency and a large spectral range. The dispersion is shown to be 8.7 A/pixel in first order and 4.3 A/pixel in second order, with a resolution of 1.5 pixels FWHM. The total efficiency is found to peak at 16 percent at 700 A.

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