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Proceedings Paper

High-resolution spectrograph for the spectroscopic survey telescope
Author(s): Robert G. Tull
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Paper Abstract

An international team led by The University of Texas and Pennsylvania State University is planning a fiber fed high resolution spectrograph for the Spectroscopic Survey Telescope. Design goals are (1) resolution 60,000 with a fiber diameter greater than 1 arc second, (2) spectral coverage per exposure to the limits permitted by the combined bandpass of the SST and optical fibers and the RQE and area of the CCD. The R (DOT) (phi) product will be maximized by use of a high-blaze angle echelle mosaic and image or pupil slicing while the bandwidth will be maximized using cross dispersion and dichroic beam division in a dual spectrograph with large-area CCDs. Critical issues are cross dispersion and order spacing, sky subtraction, echelle and CCD selection, fiber optic feed, and image or pupil slicing. Proposed methods to achieve the goals and meet the challenges posed by the issues will be presented.

Paper Details

Date Published: 1 June 1994
PDF: 12 pages
Proc. SPIE 2198, Instrumentation in Astronomy VIII, (1 June 1994); doi: 10.1117/12.176807
Show Author Affiliations
Robert G. Tull, Univ. of Texas McDonald Observatory (United States)


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

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