HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope

Steven S. Vogt; Steven L. Allen; Bruce C. Bigelow; L. Bresee; William E. Brown; T. Cantrall; Albert Conrad; M. Couture; C. Delaney; Harland W. Epps; Darrie Hilyard; David F. Hilyard; E. Horn; Neal Jern; D. Kanto; Michael J. Keane; Robert I. Kibrick; James W. Lewis; Jack Osborne; Gerard H. Pardeilhan; Terry Pfister; T. Ricketts; Lloyd B. Robinson; Richard J. Stover; Dean Tucker; Janice M. Ward; Mingzhi Wei

doi:10.1117/12.176725

1 June 1994 HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope

Steven S. Vogt, Steven L. Allen, Bruce C. Bigelow, L. Bresee, William E. Brown, T. Cantrall, Albert Conrad, M. Couture, C. Delaney, Harland W. Epps, Darrie Hilyard, David F. Hilyard, E. Horn, Neal Jern, D. Kanto, Michael J. Keane, Robert I. Kibrick, James W. Lewis, Jack Osborne, Gerard H. Pardeilhan, Terry Pfister, T. Ricketts, Lloyd B. Robinson, Richard J. Stover, Dean Tucker, Janice M. Ward, Mingzhi Wei

Author Affiliations +

Proceedings Volume 2198, Instrumentation in Astronomy VIII; (1994) https://doi.org/10.1117/12.176725
Event: 1994 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century, 1994, Kailua, Kona, HI, United States

Abstract

We describe the high resolution echelle spectrometer (HIRES) now in operation on the Keck Telescope. HIRES, which is permanently located at a Nasmyth focus, is a standard in-plane echelle spectrometer with grating post dispersion. The collimated beam diameter is 12', and the echelle is a 1 x 3 mosaic, 12' by 48' in total size, of 52.6 gr mm^MIN1, R-2.8 echelles. The cross disperser is a 2 x 1 mosaic, 24' by 16 ' in size. The camera is of a unique new design: a large (30' aperture) f/1.0, all spherical, all fused silica, catadioptric system with superachromatic performance. It spans the entire chromatic range from 0.3 (mu) to beyond 1.1 (mu) , delivering 12.6-micron (rms) images, averaged over all colors and field angles, without refocus. The detector is a thinned, backside-illuminated, Tektronix 2048 x 2048 CCD with 24-micron pixels, which spans the spectral region from 0.3 (mu) to 1.1 (mu) with very high overall quantum efficiency. The limiting spectral resolution of HIRES is 67,000 with the present CCD pixel size. The overall 'throughput' (resolution x slit width) product achieved by HIRES is 39,000 arcseconds. Peak overall efficiency for the spectrograph (not including telescope and slit losses) is 13% at 6000 angstrom. Some first-light science activities, including quasar absorption line spectra, beryllium abundances in metal-poor stars, lithium abundances in brown-dwarf candidates, and asteroseismology are discussed.

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Steven S. Vogt, Steven L. Allen, Bruce C. Bigelow, L. Bresee, William E. Brown, T. Cantrall, Albert Conrad, M. Couture, C. Delaney, Harland W. Epps, Darrie Hilyard, David F. Hilyard, E. Horn, Neal Jern, D. Kanto, Michael J. Keane, Robert I. Kibrick, James W. Lewis, Jack Osborne, Gerard H. Pardeilhan, Terry Pfister, T. Ricketts, Lloyd B. Robinson, Richard J. Stover, Dean Tucker, Janice M. Ward, and Mingzhi Wei "HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope", Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); https://doi.org/10.1117/12.176725

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