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Spectrograph design for the Asgard/BIFROST spectro-interferometric instrument for the VLTI

dc.contributor.authorChhabra, S
dc.contributor.authorFrangiamore, M
dc.contributor.authorKraus, S
dc.contributor.authorBianco, A
dc.contributor.authorGarzon, F
dc.contributor.authorMonnier, J
dc.contributor.authorMortimer, D
dc.date.accessioned2022-08-30T12:40:15Z
dc.date.issued2022-08-26
dc.date.updated2022-08-28T09:46:41Z
dc.description.abstractThe BIFROST instrument will be the first VLTI instrument optimised for high spectral resolution up to R=25,000 and operate between 1.05 and 1.7 µm. A key component of the instrument will be the spectrograph, where we require a high throughput over a broad bandwidth. In this contribution, we discuss the four planned spectral modes (R=50, R=1000, R=5000, and R=25,000), the key spectral windows that we need to cover, and the technology choices that we have considered. We present our plan to use Volume Phase Holographic Gratings (VPHGs) to achieve a high efficiency > 85%. We present our preliminary optical design and our strategies for wavelength calibration.en_GB
dc.description.sponsorshipEuropean Research Council (ERC)en_GB
dc.description.sponsorshipScience and Technology Facilities Council (STFC)en_GB
dc.identifier.citationVol. 12183, article 121830Men_GB
dc.identifier.doi10.1117/12.2628805
dc.identifier.grantnumber101003096en_GB
dc.identifier.grantnumberST/V000721/1en_GB
dc.identifier.urihttp://hdl.handle.net/10871/130605
dc.identifierORCID: 0000-0001-6017-8773 (Kraus, Stefan)
dc.language.isoenen_GB
dc.publisherSociety of Photo-optical Instrumentation Engineers (SPIE)en_GB
dc.rights© 2022 SPIE
dc.subjectVLTIen_GB
dc.subjectVolume Phase Holographic Gratingen_GB
dc.subjectBIFROSTen_GB
dc.subjectLithographic Binary Gratingen_GB
dc.subjectAsgard Suiteen_GB
dc.subjectSpectro-interferometryen_GB
dc.subjectHigh-angular resolution imagingen_GB
dc.subjectSpectrographen_GB
dc.titleSpectrograph design for the Asgard/BIFROST spectro-interferometric instrument for the VLTIen_GB
dc.typeArticleen_GB
dc.date.available2022-08-30T12:40:15Z
dc.descriptionThis is the final version. Available from SPIE via the DOI in this recorden_GB
dc.descriptionSPIE Astronomical Telescopes + Instrumentation 2022, 17 - 22 July 2022, Montreal, Canada.
dc.identifier.eissn1996-756X
dc.identifier.eissn1996-756X
dc.identifier.journalProceedings of SPIEen_GB
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserveden_GB
rioxxterms.versionVoRen_GB
rioxxterms.licenseref.startdate2022-08-10
rioxxterms.typeJournal Article/Reviewen_GB
refterms.dateFCD2022-08-30T09:01:55Z
refterms.versionFCDAM
refterms.dateFOA2022-10-05T08:37:52Z
refterms.panelBen_GB


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