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dc.contributor.authorLhospice, Esther
dc.contributor.authorBuisset, Christophe
dc.contributor.authorJones, Hugh
dc.contributor.authorMartin, Bill
dc.contributor.authorErrmann, Ronny
dc.contributor.editorShaklan, Stuart B.
dc.date.accessioned2019-10-17T00:03:01Z
dc.date.available2019-10-17T00:03:01Z
dc.date.issued2019-09-09
dc.identifier.citationLhospice , E , Buisset , C , Jones , H , Martin , B & Errmann , R 2019 , EXOhSPEC folded design optimization and performance estimation . in S B Shaklan (ed.) , Techniques and Instrumentation for Detection of Exoplanets IX; . vol. 111171 , 111170Z , Proceedings of SPIE - The International Society for Optical Engineering , vol. 11117 , SPIE . https://doi.org/10.1117/12.2529044
dc.identifier.isbn9781510629271
dc.identifier.issn0277-786X
dc.identifier.otherPURE: 17486229
dc.identifier.otherPURE UUID: 42cda22b-1105-4733-8227-7f1c634e6d96
dc.identifier.otherScopus: 85076812091
dc.identifier.otherORCID: /0000-0003-0757-6689/work/67860649
dc.identifier.urihttp://hdl.handle.net/2299/21766
dc.description.abstractThe EXOplanet high resolution SPECtrograph (EXOhSPEC) instrument is an echelle spectrograph dedicated to the detection of exoplanets by using the radial velocity method using 2m class telescopes. This spectrograph is specified to provide spectra with a spectral resolution R < 70, 000 over the spectral range from 400 to 700 nm and to reach a shortterm radial velocity precision of 3 m/s. To achieve this the separation between two adjacent spectral orders is specified to be greater than 30 pixels and to enable a wide range of targets the throughput of the instrument is specified to be higher than 4%. We present the results of the optimization of the spectrograph collimator performed and initial tests of its optical performance. First, we consider the spectrograph design and we estimate its theoretical performance. We show that the theoretical image quality is close to the diffraction limit. Second, we describe the method used to perform the tolerancing analyzes using ZEMAX software to estimate the optical performance of the instrument after manufacturing, assembly and alignment. We present the results of the performance budget and we show that the estimated image quality performance of EXOhSPEC are in line with the specifications. Third, we present the results of the stray light analysis and we show that the minimum ratio between the scientific signal and the stray light halo signal is higher than 1,000. Finally, we provide a status on the progress of the EXOhSPEC project and we show the first results obtained with a preliminary version of the prototype.en
dc.language.isoeng
dc.publisherSPIE
dc.relation.ispartofTechniques and Instrumentation for Detection of Exoplanets IX;
dc.relation.ispartofseriesProceedings of SPIE - The International Society for Optical Engineering
dc.rightsOpen
dc.subjectAstronomy
dc.subjectEchelle spectrograph
dc.subjectOptical design
dc.subjectSpectroscopy
dc.subjectStray light analysis
dc.subjectTolerancing analyzes
dc.subjectElectronic, Optical and Magnetic Materials
dc.subjectCondensed Matter Physics
dc.subjectComputer Science Applications
dc.subjectApplied Mathematics
dc.subjectElectrical and Electronic Engineering
dc.titleEXOhSPEC folded design optimization and performance estimationen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionCentre of Data Innovation Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85076812091&partnerID=8YFLogxK
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2019-09-09
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1117/12.2529044
rioxxterms.licenseref.uriUnspecified
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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