Show simple item record

Files in this item


Item metadata

dc.contributor.authorDubost, Nicolas
dc.contributor.authorBharmal, Nazim
dc.contributor.authorLanglois, Maud
dc.contributor.authorLoupias, Magali
dc.contributor.authorSchotte, Clément
dc.contributor.authorTallon, Michel
dc.contributor.authorStaykov, Lazar
dc.contributor.authorBardou, Lisa
dc.contributor.authorOsborn, James
dc.contributor.authorChemla, Fanny
dc.contributor.authorCohen, Matthieu
dc.contributor.authorBuey, Tristan
dc.contributor.authorGendron, Éric
dc.contributor.authorMorris, Tim
dc.contributor.editorSchreiber, Laura
dc.contributor.editorSchmidt, Dirk
dc.contributor.editorVernet, Elise
dc.identifier.citationDubost , N , Bharmal , N , Langlois , M , Loupias , M , Schotte , C , Tallon , M , Staykov , L , Bardou , L , Osborn , J , Chemla , F , Cohen , M , Buey , T , Gendron , É & Morris , T 2020 , First on-sky results of the CAWS wavefront sensor on the CANARY experiment . in L Schreiber , D Schmidt & E Vernet (eds) , Adaptive Optics Systems VII . , 1144819 , Proceedings of SPIE - The International Society for Optical Engineering , vol. 11448 , SPIE , Adaptive Optics Systems VII 2020 , Virtual, Online , United States , 14/12/20 .
dc.identifier.otherPURE: 272864084
dc.identifier.otherPURE UUID: 9d9e0c03-3e94-4130-a800-defd6669e6aa
dc.identifier.otherScopus: 85100060407
dc.descriptionFunding: Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) (72160371); UK Research and Innovation Science and Technology Facilities Council (STFC) (ST/L002213/1, ST/L00075X/1, ST/P000541/1, ST/T000244/1).en
dc.description.abstractPoint-diffraction interferometers are a class of wavefront sensors which can directly measure the phase with great accuracy, regardless of defects such as vortices and disconnected apertures. Due to these properties, they have been suggested in applications such as cophasing of telescope segments, wavefront sensing impervious to the island effect and high-contrast AO and imaging. This paper presents an implementation of this class of interferometer, the Calibration & Alignment~WFS (CAWS), and the results of the first on-sky tests in the visible behind the SCAO loop of the CANARY AO experiment at the William Herschel Telescope. An initial analysis of AO residuals is performed in order to retrieve the SNR of interference fringes and assess the instrument's performance under various observing conditions. Finally, these results are used to test the validity of our models, which would allow for rapid implementation-specific modelling to find minimum-useful flux and other CAWS limits.
dc.relation.ispartofAdaptive Optics Systems VIIen
dc.relation.ispartofseriesProceedings of SPIE - The International Society for Optical Engineeringen
dc.rightsCopyright © 2021 SPIE. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectAdaptive opticsen
dc.subjectPoint-diffraction interferometryen
dc.subjectWavefront sensingen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectComputer Science Applicationsen
dc.subjectElectrical and Electronic Engineeringen
dc.subjectElectronic, Optical and Magnetic Materialsen
dc.subjectApplied Mathematicsen
dc.subjectCondensed Matter Physicsen
dc.titleFirst on-sky results of the CAWS wavefront sensor on the CANARY experimenten
dc.typeConference itemen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen

This item appears in the following Collection(s)

Show simple item record