Initial Results from the USNO Dispersed Fourier Transform Spectrograph

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dc.creatorHajian, Arsen R.
dc.creatorBehr, Bradford B.
dc.creatorCenko, Andrew T.
dc.creatorOlling, Robert P.
dc.creatorMozurkewich, David
dc.creatorArmstrong, J. Thomas
dc.creatorPohl, Brian
dc.creatorPetrossian, Sevan
dc.creatorKnuth, Kevin H.
dc.creatorHindsley, Robert B.
dc.creatorMurison, Marc
dc.creatorEfroimsky, Michael
dc.creatorDantowitz, Ronald
dc.creatorKozubal, Marek
dc.creatorCurrie, Douglas G.
dc.creatorNordgren, Tyler E.
dc.creatorTycner, Christopher
dc.creatorMcMillan, Robert S.
dc.date2006-11-15
dc.date2007-02-05
dc.date.accessioned2026-07-07T11:42:39Z
dc.date.available2026-07-07T11:42:39Z
dc.descriptionWe have designed and constructed a ``dispersed Fourier Transform Spectrometer'' (dFTS), consisting of a conventional FTS followed by a grating spectrometer. By combining these two devices, we negate a substantial fraction of the sensitivity disadvantage of a conventional FTS for high resolution, broadband, optical spectroscopy, while preserving many of the advantages inherent to interferometric spectrometers. In addition, we have implemented a simple and inexpensive laser metrology system, which enables very precise calibration of the interferometer wavelength scale. The fusion of interferometric and dispersive technologies with a laser metrology system yields an instrument well-suited to stellar spectroscopy, velocimetry, and extrasolar planet detection, which is competitive with existing high-resolution, high accuracy stellar spectrometers. In this paper, we describe the design of our prototype dFTS, explain the algorithm we use to efficiently reconstruct a broadband spectrum from a sequence of narrowband interferograms, and present initial observations and resulting velocimetry of stellar targets.
dc.identifierhttps://arxiv.org/abs/astro-ph/0611495
dc.identifierhttp://arxiv.org/abs/astro-ph/0611495
dc.identifierAstrophys.J.661:616-633,2007
dc.identifierdoi:10.1086/513181
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200961
dc.subjectAstrophysics
dc.titleInitial Results from the USNO Dispersed Fourier Transform Spectrograph
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