Enhanced spectral resolution via externally dispersed interferometry

Jerry Edelstein; David Erskine; Martin Sirk; Andrew Vanderburg; Edward H. Wishnow

doi:10.1117/12.928290

24 September 2012 Enhanced spectral resolution via externally dispersed interferometry

Jerry Edelstein, David Erskine, Martin Sirk, Andrew Vanderburg, Edward H. Wishnow

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84464J (2012) https://doi.org/10.1117/12.928290
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Jerry Edelstein, David Erskine, Martin Sirk, Andrew Vanderburg, and Edward H. Wishnow "Enhanced spectral resolution via externally dispersed interferometry", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84464J (24 September 2012); https://doi.org/10.1117/12.928290

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