The Infrared Space Observatory (ISO), a project of the European space agency (ESA), is an astronomical satellite operating at wavelengths from 2.5 to 200 microm. It will be launched in 1993. The ISO optical subsystem is a cryogenically cooled telescope with its baffling system (main baffle and sunshade). The telescope, a 60 cm Ritchey-Chretien type, focuses the beam to the four scientific instruments located in its focal plane. The extremely low temperature, 1.8 K, is provided by the PayLoad Module (PLM) cryostat, filled with superfluid He. The design of those three elements, which will be described after, has been supported on one hand by different mathematical models (mechanical, thermal and optical for image quality and straylight) and on the other hand by dedicated elementary tests linked to operation in cryogenic environment (infrared coatings, mirror fixation, bonding at cryogenic temperature, welding ...).


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    Title :

    The infrared space observatory. Optical subsystem


    Additional title:

    Das Infrarot-Weltraumobservatorium. Optisches Teilsystem


    Contributors:
    Singer, C. (author) / Massoni, J.A. (author) / Moßbacher, B. (author) / Cinotti, C. (author)


    Publication date :

    1991


    Size :

    10 Seiten, 5 Bilder, 2 Tabellen, 6 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Salama, A. / Kessler, M. F. | British Library Online Contents | 1992


    Infrared Space Observatory (ISO)

    G. Helou / M. F. Kessler | NTIS | 1995


    The Gamma Ray Observatory (GRO) Propulsion Subsystem

    WEATHERLY, J. / CARLSON, R. / HEVERT, S. | AIAA | 1988


    The INFRARED SPACE OBSERVATORY (ISO)

    Kessler, M.F. / Habing, H.J. | Elsevier | 1993