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dc.contributor.authorErskine, David J.en_US
dc.contributor.authorEdelstein, Jerryen_US
dc.contributor.authorWishnow, Edward H.en_US
dc.contributor.authorSirk, Martinen_US
dc.contributor.authorMuirhead, Philip S.en_US
dc.contributor.authorMuterspaugh, Matthew W.en_US
dc.contributor.authorLloyd, James P.en_US
dc.contributor.authorIshikawa, Yuzoen_US
dc.contributor.authorMcDonald, Eliza A.en_US
dc.contributor.authorShourt, William V.en_US
dc.contributor.authorVanderburg, Andrew M.en_US
dc.date.accessioned2017-06-02T13:42:14Z
dc.date.available2017-06-02T13:42:14Z
dc.date.issued2016-05-27
dc.identifier.citationDavid J. Erskine, Jerry Edelstein, Edward H. Wishnow, Martin Sirk, Philip S. Muirhead, Matthew W. Muterspaugh, James P. Lloyd, Yuzo Ishikawa, Eliza A. McDonald, William V. Shourt, Andrew M. Vanderburg, “High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: Part 1, data analysis and results,” J. Astron. Telesc. Instrum. Syst. 2 (2), 025004 (2016), doi: 10.1117/1.JATIS.2.2.025004.
dc.identifier.issn2329-4124
dc.identifier.urihttps://hdl.handle.net/2144/22296
dc.description.abstractHigh-resolution broadband spectroscopy at near-infrared wavelengths (950 to 2450 nm) has been performed using externally dispersed interferometry (EDI) at the Hale telescope at Mt. Palomar. Observations of stars were performed with the “TEDI” interferometer mounted within the central hole of the 200-in. primary mirror in series with the comounted TripleSpec near-infrared echelle spectrograph. These are the first multidelay EDI demonstrations on starlight, as earlier measurements used a single delay or laboratory sources. We demonstrate very high (10×) resolution boost, from original 2700 to 27,000 with current set of delays (up to 3 cm), well beyond the classical limits enforced by the slit width and detector pixel Nyquist limit. Significantly, the EDI used with multiple delays rather than a single delay as used previously yields an order of magnitude or more improvement in the stability against native spectrograph point spread function (PSF) drifts along the dispersion direction. We observe a dramatic (20×) reduction in sensitivity to PSF shift using our standard processing. A recently realized method of further reducing the PSF shift sensitivity to zero is described theoretically and demonstrated in a simple simulation which produces a 350× times reduction. We demonstrate superb rejection of fixed pattern noise due to bad detector pixels—EDI only responds to changes in pixel intensity synchronous to applied dithering. This part 1 describes data analysis, results, and instrument noise. A section on theoretical photon limited sensitivity is in a companion paper, part 2.en_US
dc.format.extent025004 - 025004en_US
dc.publisherInternational Society for Optics and Photonicsen_US
dc.relation.ispartofJournal of Astronomical Telescopes, Instruments, and Systems
dc.rightsCopyright 2016 Society of Photo Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.en_US
dc.subjectDispersed interferometryen_US
dc.subjectDoppler radial velocimetryen_US
dc.subjectHigh-resolution spectroscopyen_US
dc.subjectHale telescopeen_US
dc.titleHigh-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: Part 1, data analysis and resultsen_US
dc.typeArticleen_US
dc.identifier.doi10.1117/1.JATIS.2.2.025004
pubs.elements-sourcemanual-entryen_US
pubs.notesEmbargo: Not knownen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
dc.identifier.orcid0000-0002-0638-8822 (Muirhead, PS)


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