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  • Mise en place de la structure principale.

    Ghaouti HANSALI, Patrick CAILLET



    Instrument Main Structure (IMS) Installed & Aligned with Regards to the VLT Simulator

    Mise en place de la structure principale (IMS)
    Mise en place de la structure principale (IMS)


    After Reception the Instrument Main Structure was handled to its integration location on the Nasmyth Platform replica which was aligned and consistent with the VLT simulator simulating the VLT focus. The IMS was then globally aligned with regards to the platform and VLT focus using lifting wedges and laser tracker for alignment. This pre-alignment was in specification for all degree of freedom except in focus with 1 mm lower then spec. This alignment will be refined later on by optical means.