A UV prime-focus spectrograph for the CFHT

Details A UV prime-focus spectrograph for the CFHT A UV prime-focus spectrograph for the CFHT

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...163..301b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 163, no. 1-2, July 1986, p. 301-306. Research supported by the Institut Nation

Astronomy and Astrophysics

Astronomy

8

Ultraviolet Astronomy, Ultraviolet Spectrometers, Charge Coupled Devices, Elliptical Galaxies, Gratings (Spectra), Quasars, Seyfert Galaxies

Scientific paper

The UV prime spectrograph at the Canada-France-Hawaii Telescope is the first instrument to be designed with an aspherized diffraction grating. This technique leads to all reflective Schmidt designs with a very small amount of optical surfaces and fast aperture ratio. A thin backside illuminated RCA CCD is now used as the detector. Since the detector is at the focus of an f/1 mounting, within the optical path, a minicryostat (5 cm×5 cm×3 cm) was designed to minimize the central obscuration. This paper describes this new instrument, its performances and some examples of applications.

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