Dr. Luciano Miglietta Profile

Dr. Luciano Miglietta

Mechanical Engineer at Osservatorio Astrofisico di Arcetri

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Publications (11)

Proceedings Article | 24 September 2012 Paper

The design of the MOONS-VLT spectrometer

E. Oliva, E. Diolaiti, B. Garilli, R. Gratton, D. Lorenzetti, P. Schipani, S. Scuderi, E. Vanzella, M. Cirasuolo, J. Afonso, R. Bender, P. Bonifacio, L. Kaper, L. Vanzi, C. Baffa, A. Bianco, C. Bonoli, F. Bortoletto, P. Bruno, L. Carbonaro, M. Centrone, G. Cresci, V. De Caprio, C. Del Vecchio, P. Di Marcantonio, A. Di Paola, F. D'Alessio, M. D'Alessandro, S. D'Orsi, G. Falcini, D. Ferruzzi, A. Fontana, I. Foppiani, M. Fumana, E. Giani, F. Leone, G. Li Causi, M. Lombini, R. Maiolino, F. Mannucci, L. Marty, L. Miglietta, M. Munari, R. Navarro, L. Origlia, L. Paioro, F. Pedichini, J. Pragt, S. Randich, M. Scodeggio, P. Spanò, R. Speziali, R. Stuik, A. Tozzi, F. Vitali

Proceedings Volume 8446, 84464V (2012) https://doi.org/10.1117/12.925309

KEYWORDS: Optical fibers, Cameras, Spectroscopy, Sensors, Collimators, Spectrographs, Lawrencium, Mirrors, Spectral resolution, Lenses

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Proceedings Article | 13 September 2012 Paper

Optical calibration and testing of the E-ELT M4 adaptive mirror

P. Spanò, A. Bianco, R. Briguglio, M. Cecconi, L. Miglietta, E. Molinari, G. Pariani, A. Riccardi, M. Riva, D. Tresoldi, M. Xompero, F. Zerbi

Proceedings Volume 8447, 84473O (2012) https://doi.org/10.1117/12.926008

KEYWORDS: Mirrors, Calibration, Optical testing, Computer generated holography, Interferometry, Spherical lenses, Sensors, Spatial resolution, Adaptive optics, Diffraction

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Proceedings Article | 6 July 2006 Paper

The aluminizing system for the 8.4 meter diameter LBT primary mirrors

Bruce Atwood, Daniel Pappalardo, Thomas O'Brien, John Hill, Jerry Mason, Ralph Belville, David Steinbrecher, David Brewer, Ed Teiga, Barry Sabol, James Howard, L. Miglietta

Proceedings Volume 6273, 62730T (2006) https://doi.org/10.1117/12.672998

KEYWORDS: Mirrors, Aluminum, Telescopes, Space telescopes, Camera shutters, Control systems, Coating, Reflectivity, Space mirrors, Electronics

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Proceedings Article | 2 August 2000 Paper

Large Binocular Telescope pre-assembly

Luciano Miglietta, Enzo Anaclerio, G. Castelli, Daniele Gallieni, Gianpietro Marchiori, Pierfrancesco Rossettini, P. Tassan Din, Raffaele Tomelleri, G. Villa, Alberto Zanon

Proceedings Volume 4004, (2000) https://doi.org/10.1117/12.393906

KEYWORDS: Telescopes, Manufacturing, Interfaces, Control systems, Space telescopes, Head, Tolerancing, Mirrors, Photonic integrated circuits, Assembly tolerances

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Proceedings Article | 19 July 1999 Paper

Final design of the active positioning actuators for the Large Binocular Telescope primary mirrors

Luciano Miglietta, Valdemaro Biliotti, Matteo Accardo, Paolo Stefanini, Bernardo Bettini, Claudio Braccesi

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355022

KEYWORDS: Mirrors, Actuators, Telescopes, Optical instrument design, Control systems, Digital signal processing, Astronomical telescopes, Prototyping, Observatories, Sensors

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The latest generation of astronomical telescopes is equipped by primary mirrors about 8 meter in diameter increasing demands not only of the general mechanical structure but also of the technical performances of the mirror support systems. The Large Binocular Telescope has two 8.4 meter primary mirrors supported on the same elevation mechanical structure and, each of them, located in a mirror cell enviroment. Into the latter structures hundredth of pneumatic actuators bear the weigth of the primary mirror and six positioning actuators find out the six degrees of freedom of the mirror itself, then a new control system is able to determine realtime the stiffness and the damping required by the primary mirror system. In this paper the authors describe the mechanical and the electronic active control system design and testing of the position actuator prototype that mechanically link the 8.4 m honeycomb mirror to six rigidly reinforced locations on each primary Mirror Cell structure. During telescope operation, the adjustable length of the actuators precisely control the six degrees of freedom of the mirror. Each actuator has a high mechanical axial stiffness and, as new feature, an active control system, based on piezoelectric elements and capacitive sensor, in order to control the axial stiffness versus damping, with a bandwidth from DC up to 50 Hz, assuring that the natural frequencies of the mirror do not degrade the optical performance of the telescope under external forces as the wind spectrum. Moreover, other requirements have been satisfied in the mechanic of the actuators: flexures are provided to minimize any moments applied to the attachment of the actuator to the mirror; one axial load cell for each actuator provides a precise realtime measurement of the external forces applied to the mirror, such as wind loads, to feedback the pneumatic force system that supports the weight of the mirror; a very sensitive and precise capacitive sensor measures the total length of the actuator to submicron resolution upon request. Last but not least each actuator has a reliable fail-safe system that limits the compressive and tensile forces that can be applied to the mirror. The mechanical and the electronic design DSP based and all the experimental tests of this actuator prototype have been performed in the Astrophysical Observatory of Arcetri laboratories under the supervision of the authors of this paper.

Proceedings Article | 18 September 1997 Paper

Large Binocular Telescope: the control system of the position actuator of the 8.4-m borosilicate honeycomb primary mirrors

Luciano Miglietta, Valdemaro Biliotti, Claudio Braccesi, Vito Pante

Proceedings Volume 3112, (1997) https://doi.org/10.1117/12.278819

KEYWORDS: Mirrors, Actuators, Control systems, Telescopes, Chemical elements, Control systems design, Prototyping, Numerical simulations, Ceramics, Active optics

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Proceedings Article | 21 March 1997 Paper

Final design of the Large Binocular Telescope M1 mirror cells

Luciano Miglietta, Peter Gray, Walter Gallieni, Ciro Del Vecchio

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269052

KEYWORDS: Mirrors, Actuators, Telescopes, Control systems, Mirror structures, Optical instrument design, Interfaces, Modal analysis, Space telescopes, Advanced distributed simulations

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Proceedings Article | 21 March 1997 Paper

Mechanical structure of the Large Binocular Telescope

Ciro Del Vecchio, Warren Davison, Walter Gallieni, Gianfranco Rigato, Luciano Miglietta

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269037

KEYWORDS: Telescopes, Mirrors, Finite element methods, Optical instrument design, Systems modeling, Mode locking, Advanced distributed simulations, Performance modeling, Device simulation, Instrument modeling

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Proceedings Article | 20 November 1996 Paper

Position actuators of the 6.5-m borosilicate honeycomb primary mirrors

Luciano Miglietta, Shawn Callahan

Proceedings Volume 2865, (1996) https://doi.org/10.1117/12.259037

KEYWORDS: Mirrors, Actuators, Telescopes, Space telescopes, Control systems, Sensors, Space mirrors, Astronomical telescopes, Tolerancing, Prototyping

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Proceedings Article | 6 September 1995 Paper

Modal analysis tests on the supporting structure of the secondary mirror of the Large Binocular Telescope

Luciano Miglietta

Proceedings Volume 2542, (1995) https://doi.org/10.1117/12.218678

KEYWORDS: Modal analysis, Telescopes, Finite element methods, Mirrors, Spherical lenses, Optical instrument design, Signal processing, Amplifiers, Quality measurement, Optical mounts

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Proceedings Article | 1 June 1994 Paper

Mechanical design of the Large Binocular Telescope

Ciro Del Vecchio, Luciano Miglietta, Warren Davison

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176248

KEYWORDS: Telescopes, Mirrors, Finite element methods, Mechanical engineering, Optical instrument design, Space telescopes, Instrument modeling, Telescope design, Optical components, Computer programming

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Showing 5 of 11 publications

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