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    Coronagraphs adapted to atmosphere conditions

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    Coronagraphs adapted.pdf (1.431Mb)
    Identificadores
    URI: http://hdl.handle.net/10902/3754
    DOI: 10.1364/OE.20.004574
    ISSN: 1094-4087
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    Author
    Cagigas García, Miguel ÁngelAutoridad Unican; Valle Herrero, Pedro JoséAutoridad Unican; Pérez Cagigal, ManuelAutoridad Unican
    Date
    2012-02-13
    Derechos
    © 2012 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.20.004574. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
    Publicado en
    Optics Express, 2012, 20(4), 4574-4582
    Publisher
    The Optical Society (OSA)
    Palabras clave
    Astronomical optics
    Telescopes
    Image enhancement
    Image detection systems
    Abstract:
    In this paper we show new ways to improve the performance of ground-based coronagraphy. We introduce adaptive coronagraphic masks whose profile is a binary version of the instantaneous atmospherically degraded star image. We also propose the hyper-Gaussian profile masks obtained by averaging adaptive masks. In addition, adaptive Lyot stops and hyper-Gaussian Lyot stops are analyzed. Computer simulations show that all these masks outperform the circular hard-edged mask and that a proper mask and stop combination significantly reduces the angular separation at which a faint companion can be detected.
    Collections to which it belong
    • D14 Artículos [109]
    • D20 Artículos [340]

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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España