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    An engineered design of a diffractive mask for high precision astrometry

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    Author
    Dennison, Kaitlin
    Ammons, S. Mark cc
    Garrel, Vincent
    Marin, Eduardo
    Sivo, Gaetano
    Bendek, Eduardo
    Guyon, Oliver
    Affiliation
    Univ Arizona
    Issue Date
    2016-07-27
    Keywords
    diffractive
    astrometry
    AutoCAD
    IDL
    Zemax
    adaptive optics
    exoplanet
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    Kaitlin Dennison ; S. Mark Ammons ; Vincent Garrel ; Eduardo Marin ; Gaetano Sivo ; Eduardo Bendek and Oliver Guyon " An engineered design of a diffractive mask for high precision astrometry ", Proc. SPIE 9909, Adaptive Optics Systems V, 99094E (July 27, 2016); doi:10.1117/12.2233799; http://dx.doi.org/10.1117/12.2233799
    Journal
    ADAPTIVE OPTICS SYSTEMS V
    Rights
    © 2016 SPIE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    AutoCAD, Zemax Optic Studio 15, and Interactive Data Language (IDL) with the Proper Library are used to computationally model and test a diffractive mask (DiM) suitable for use in the Gemini Multi-Conjugate Adaptive Optics System (GeMS) on the Gemini South Telescope. Systematic errors in telescope imagery are produced when the light travels through the adaptive optics system of the telescope. DiM is a transparent, flat optic with a pattern of miniscule dots lithographically applied to it. It is added ahead of the adaptive optics system in the telescope in order to produce diffraction spots that will encode systematic errors in the optics after it. Once these errors are encoded, they can be corrected for. DiM will allow for more accurate measurements in astrometry and thus improve exoplanet detection. The mechanics and physical attributes of the DiM are modeled in AutoCAD. Zemax models the ray propagation of point sources of light through the telescope. IDL and Proper simulate the wavefront and image results of the telescope. Aberrations are added to the Zemax and IDL models to test how the diffraction spots from the DiM change in the final images. Based on the Zemax and IDL results, the diffraction spots are able to encode the systematic aberrations.
    ISSN
    0277-786X
    DOI
    10.1117/12.2233799
    Version
    Final published version
    Additional Links
    http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.2233799
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2233799
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