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Proceedings Paper

Low-Resolution Imaging Spectrometer for the Keck Telescope
Author(s): J. Beverly Oke; Judith G. Cohen; Michael M. Carr; Arsham Dingiziam; Frederick H. Harris; Richard Lucinio; S. Labrecque; W. A. Schaal; S. Southard
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Paper Abstract

The Low Resolution Imaging Spectrometer is designed for use at the Cassegrain focus of the Keck 10-m telescope. It provides the capability of acquiring low resolution (R equals 1000 to 5000) digital spectra, as well as 6 X 8 arc-minute moderately high spatial resolution (4.65 pixels/arc-second) direct images. Spectroscopy can be carried out with single slits which are 3 arc-minutes long. In addition punched multi-slits can also be employed which allow for the acquisition of at least forty spectra simultaneously. Since the instrument is designed to be as efficient as possible, it is a double spectrograph, with a dichroic splitting the blue and red light into separate optical paths after the collimator. Only the red side has been constructed thus far. With a 2048 by 2048 thinned Tektronix CCD as the detector the total efficiency of the red side at the peak of the grating blaze is predicted to be nearly 40%. Results of the commissioning observing runs will be described.

Paper Details

Date Published: 1 June 1994
PDF: 7 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176745
Show Author Affiliations
J. Beverly Oke, California Institute of Technology (Canada)
Judith G. Cohen, California Institute of Technology (United States)
Michael M. Carr, California Institute of Technology (United States)
Arsham Dingiziam, California Institute of Technology (United States)
Frederick H. Harris, California Institute of Technology (United States)
Richard Lucinio, California Institute of Technology (United States)
S. Labrecque, California Institute of Technology (United States)
W. A. Schaal, California Institute of Technology (United States)
S. Southard, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 2198:
Instrumentation in Astronomy VIII
David L. Crawford; Eric R. Craine, Editor(s)

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