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Your search keyword '"Ferragina, Luigi"' showing total 11 results
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11 results on '"Ferragina, Luigi"'

1. Active optics primary mirror support system for the 2.6 m VST telescope

Author

Schipani, Pietro, D'Orsi, Sergio, Ferragina, Luigi, Fierro, Davide, Marty, Laurent, Molfese, Cesare, and Perrotta, Francesco

Subjects
Optics -- Research, Telescope -- Equipment and supplies, Telescope -- Design and construction, Telescope -- Safety and security measures, Telescope -- Mechanical properties, Earthquake resistant design -- Methods, Safety factor in engineering -- Research, Aberration -- Control, Astronomy, Physics
Abstract

The Very Large Telescope Survey Telescope (VST) is equipped with an active optics system in order to correct low-order aberrations. The 2.6m primary mirror is supported both axially and laterally and is surrounded by several safety devices for earthquake protection. We describe the mirror support system and discuss the results of the qualification test campaign. OCIS codes: 220.1000, 220.1080, 350.1260, 350.1270, 110.1080, 110.6770.

Published
2010

2. The VST active primary mirror support system

Author

Schipani, Pietro, primary, Capaccioli, Massimo, additional, D'Orsi, Sergio, additional, Ferragina, Luigi, additional, Marty, Laurent, additional, Molfese, Cesare, additional, Perrotta, Francesco, additional, De Paris, Giacinto, additional, Fierro, Davide, additional, Tomelleri, Raffaele, additional, Rossettini, Pierfrancesco, additional, Perina, Francesco, additional, Recchia, Stefano, additional, and Magrin, Demetrio, additional

Published
2010
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3. The VST auxiliary units: a status report before their commissioning in Paranal

Author

Farinato, Jacopo, primary, Schipani, Pietro, additional, Arcidiacono, Carmelo, additional, Capaccioli, Massimo, additional, Da Ronco, Alessandro, additional, De Paris, Giacinto, additional, D'Orsi, Sergio, additional, Ferragina, Luigi, additional, Fierro, Davide, additional, Magrin, Demetrio, additional, Marty, Laurent, additional, Perina, Francesco, additional, Ragazzoni, Roberto, additional, Recchia, Stefano, additional, Rossettini, Pierfrancesco, additional, Umbriaco, Gabriele, additional, and Tomelleri, Raffaele, additional

Published
2010
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6. VST project: the adapter rotator (M1 cell)

Author

Mancini, Dario, primary, Caputi, Oreste, additional, Cortecchia, Fausto, additional, Ferragina, Luigi, additional, Fierro, D., additional, Fiume, V., additional, Mancini, Guido, additional, Marra, Gabriella, additional, Pellone, Lorenzo, additional, Perrotta, Francesco, additional, Sciarretta, Giovanni, additional, and Valentino, Michele, additional

Published
2003
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7. VST project: mechanical design optimization

Author

Mancini, Dario, primary, Mancini, Guido, additional, Perrotta, Francesco, additional, Ferragina, Luigi, additional, Fierro, D., additional, Fiume Garelli, Valentina, additional, Pellone, Lorenzo, additional, Caputi, Oreste, additional, Sciarretta, Giovanni, additional, and Valentino, Michele, additional

Published
2003
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8. VST project: the adapter rotator (M1 cell).

Author

Mancini, Dario, Caputi, Oreste, Cortecchia, Fausto, Ferragina, Luigi, Fierro, D., Fiume, V., Mancini, Guido, Marra, Gabriella, Pellone, Lorenzo, Perrotta, Francesco, Sciarretta, Giovanni, and Valentino, Michele

Published
2003
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9. VIMOS mechanical and control system design.

Author

Mancini, Dario, LeFevre, Oliver, Caputi, Oreste, Ferragina, Luigi, Fiume Garelli, Valentina, Mancini, Guido, Tommasi Mavar, P., Parrella, C., Perrotta, Francesco, Russo, M., Russo, R., Schibeci, M., and Schipani, Pietro

Published
2000
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10. The VST auxiliary units: a status report before their commissioning in Paranal

Author

Davide Fierro, Alessandro Da Ronco, Carmelo Arcidiacono, Sergio D'Orsi, Luigi Ferragina, Roberto Ragazzoni, Giacinto De Paris, Jacopo Farinato, Pietro Schipani, Raffaele Tomelleri, Demetrio Magrin, Gabriele Umbriaco, Pierfrancesco Rossettini, Massimo Capaccioli, Stefano Recchia, Laurent Marty, Francesco Perina, Farinato, Jacopo, Schipani, Pietro, Arcidiacono, Carmelo, Capaccioli, Massimo, da Ronco, Alessandro, de Paris, Giacinto, D'Orsi, Sergio, Ferragina, Luigi, Fierro, Davide, Magrin, Demetrio, Marty, Laurent, Perina, Francesco, Ragazzoni, Roberto, Recchia, Stefano, Rossettini, Pierfrancesco, Umbriaco, Gabriele, and Tomelleri, Raffaele

Subjects
Wide field, Computer science, business.industry, Project commissioning, Applied Mathematics, Real-time computing, Atmospheric dispersion compensator, Active optics, Condensed Matter Physics, Status report, Computer Science Applications, law.invention, Telescope, VLT, law, Auto guide, Electronic, Optical and Magnetic Materials, Computer Vision and Pattern Recognition, Electrical and Electronic Engineering, Adaptive optics, Telecommunications, business, Electronic, Optical and Magnetic Materials
Abstract

The VST telescope is going to be commissioned in Paranal, together with its main sub-systems, such as the Image Analysis and Auto-Guiding system. A preliminary work of fine tuning of each sub-system has been performed in Italy before their shipping to Paranal, where they are waiting for the telescope AIV to be completed in a way to start the final commissioning of the overall system. Each unit has been extensively characterized and tested, with particular care to the Active Optics Shack-Hartmann sensor and to the Auto-Guiding arm. We describe here the phases concerning the integration and test of all the VST Auxiliary Units performed in Italy before their shipping to Paranal.

Published
2010
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11. The VST active primary mirror support system

Author

Davide Fierro, Giacinto De Paris, Luigi Ferragina, Massimo Capaccioli, Laurent Marty, Raffaele Tomelleri, Pietro Schipani, Pierfrancesco Rossettini, Cesare Molfese, F. Perrotta, Stefano Recchia, Francesco Perina, Demetrio Magrin, Sergio D'Orsi, Schipani, Pietro, Capaccioli, Massimo, D'Orsi, Sergio, Ferragina, Luigi, Marty, Laurent, Molfese, Cesare, Perrotta, Francesco, de Paris, Giacinto, Fierro, Davide, Tomelleri, Raffaele, Rossettini, Pierfrancesco, Perina, Francesco, Recchia, Stefano, and Magrin, Demetrio

Subjects
Physics, business.industry, Control unit, Active optics, law.invention, Primary mirror, Telescope, Optics, Software, law, business, Driven element, Actuator, Optical aberration
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.

Published
2010

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