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Proceedings Paper

Enhanced spectral resolution via externally dispersed interferometry
Author(s): Jerry Edelstein; David Erskine; Martin Sirk; Andrew Vanderburg; Edward H. Wishnow
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Paper Abstract

Externally dispersed interferometry (EDI) uses a hybrid spectrometer that combines a Michelson interferometer in series with a grating spectrometer. EDI provides a means of deriving spectral information at a resolution substantially higher than that provided by the grating spectrograph alone. Near IR observations have been conducted using the Triplespec spectrometer mounted on the 5m Hale telescope. Spectra have been reconstructed at a resolution of ~27000 where the resolution of Triplespec is ~2700. Progress in the development of the EDI technique is reported herein emphasizing studies related to the accuracy of the reconstructed spectra.

Paper Details

Date Published: 24 September 2012
PDF: 8 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84464J (24 September 2012); doi: 10.1117/12.928290
Show Author Affiliations
Jerry Edelstein, Space Sciences Lab., Univ. of California, Berkeley (United States)
David Erskine, Lawrence Livermore National Lab. (United States)
Martin Sirk, Space Sciences Lab., Univ. of California, Berkeley (United States)
Andrew Vanderburg, Space Sciences Lab., Univ. of California, Berkeley (United States)
Edward H. Wishnow, Space Sciences Lab., Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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