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    Opto-mechanical design of a new cross dispersion unit for the CRIRES+ high resolution spectrograph for the VLT 
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    • Opto-mechanical design of a new cross dispersion unit for the CRIRES+ high resolution spectrograph for the VLT
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    • School of Physics and Astronomy
    • Astronomy and Astrophysics
    • Opto-mechanical design of a new cross dispersion unit for the CRIRES+ high resolution spectrograph for the VLT
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    Opto-mechanical design of a new cross dispersion unit for the CRIRES+ high resolution spectrograph for the VLT

    Volume
    9147
    ISBN-13
    9780819496157
    DOI
    10.1117/12.2054800
    ISSN
    0277-786X
    Metadata
    Show full item record
    Abstract
    © 2014 SPIE. CRIRES is one of the few IR (0.92-5.2 μm) high-resolution spectrographs in operation at the VLT since 2006. Despite good performance it suffers a limitation that significantly hampers its ability: a small spectral coverage per exposure. The CRIRES upgrade (CRIRES+) proposes to transform CRIRES into a cross-dispersed spectrograph while maintaining the high resolution (100000) and increasing the wavelength coverage by a factor 10 compared to the current capabilities. A major part of the upgrade is the exchange of the actual cryogenic pre-disperser module by a new cross disperser unit. In addition to a completely new optical design, a number of important changes are required on key components and functions like the slit unit and detectors units. We will outline the design of these new units fitting inside a predefined and restricted space. The mechanical design of the new functions including a description and analysis will be presented. Finally we will present the strategy for the implementation of the changes.
    Authors
    Lizon, JL; Klein, B; Oliva, E; Löwinger, T; Anglada Escude, G; Baade, D; Bristow, P; Dorn, RJ; Follert, R; Grunhut, J
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/11993
    Collections
    • Astronomy and Astrophysics [182]
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