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http://hdl.handle.net/20.500.12386/34734
Title: | The VST active primary mirror support system | Authors: | SCHIPANI, Pietro Capaccioli, Massimo D'ORSI, SERGIO Ferragina, Luigi MARTY, Laurent MOLFESE, CESARE Perrotta, F. DE PARIS, GIACINTO FIERRO, Davide Tomelleri, Raffaele Rossettini, Pierfrancesco Perina, Francesco Recchia, Stefano MAGRIN, DEMETRIO |
Issue Date: | 2010 | Volume: | Modern Technologies in Space- and Ground-based Telescopes and Instrumentation | Editors: | Atad-Ettedgui, Eli; Lemke, Dietrich | Series: | PROCEEDINGS OF SPIE | First Page: | 773931-- | Abstract: | The 2.6-m primary mirror of the VST telescope is equipped with an active optics system in order to correct low-order aberrations, constantly monitoring the optical quality of the image and controlling the relative position and the shape of the optical elements. Periodically an image analyser calculates the deviation of the image from the best quality. VST is equipped with both a Shack-Hartmann in the probe system and a curvature sensor embedded in the OmegaCAM instrument. The telescope control software decomposes the deviation into single optical contributions and calculates the force correction that each active element has to perform to achieve the optimal quality. The set of correction forces, one for each axial actuator, is computed by the telescope central computer and transmitted to the local control unit of the primary mirror system for execution. The most important element of the VST active optics is the primary mirror, with its active support system located within the primary mirror cell structure. The primary mirror support system is composed by an axial and a lateral independent systems and includes an earthquake safety system. The system is described and the results of the qualification test campaign are discussed. | Conference Name: | Modern Technologies in Space- and Ground-based Telescopes and Instrumentation | Conference Place: | San Diego, California, United States | Conference Date: | 27 June - 2 July, 2010 | URI: | http://hdl.handle.net/20.500.12386/34734 | URL: | https://lens.org/011-133-572-104-293 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7739/1/The-VST-active-primary-mirror-support-system/10.1117/12.856605.short |
ISSN: | 0277-786X | ISBN: | 9780819482297 | DOI: | 10.1117/12.856605 | Bibcode ADS: | 2010SPIE.7739E..31S | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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The_VST_active_primary_mirror_supp_system.pdf | Pdf editoriale | 2.87 MB | Adobe PDF | View/Open |
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