Show simple item record

dc.contributor.authorPérez Cagigal, Manuel 
dc.contributor.authorFernández Canales, Vidal 
dc.contributor.authorPedro José, Valle Herrero
dc.contributor.authorOtí González, José Emilio
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-11-11T12:16:06Z
dc.date.available2013-11-11T12:16:06Z
dc.date.issued2009-10-23
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/10902/3872
dc.description.abstractWe introduce a stellar coronagraph that uses a coronagraphic mask described by a Hermite function or a combination of them. It allows the detection of exoplanets providing both deep starlight extinction and high angular resolution. This angular resolution depends on the order of the Hermite function used. An analysis of the coronagraph performance is carried out for different even order masks. Numerical simulations of the ideal case, with no phase errors and perfect telescope pointing, show that on-axis starlight is reduced to very low intensity levels corresponding to a gain of at least 25 magnitudes (10−10 light intensity reduction). The coronagraphic throughput depends on the Hermite function or combination selected. The proposed mask series presents the same advantages of band limited masks along with the benefit of reducing the light diffracted by the mask border thanks to its particular shape. Nevertheless, for direct detection of Earth-like exoplanets it requires the use of adaptive optics facilities for compensating the perturbations introduced by the atmosphere and by the optical system.es_ES
dc.format.extent6 p.es_ES
dc.language.isoenges_ES
dc.publisherThe Optical Society (OSA)es_ES
dc.rights© 2009 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.17.020515. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.es_ES
dc.sourceOptics Express, Vol. 17, Issue 22, pp. 20515-20520 (2009)es_ES
dc.titleCoronagraphic mask design using Hermite functionses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1364/OE.17.020515
dc.type.versionpublishedVersiones_ES


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record