Dr. Laurence Méant Profile

Dr. Laurence Méant

at AMOS S.A.

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 11 September 2024 Presentation + Paper

Thirty Meter Telescope: preliminary design of the M2 support system and positioner

Olivier Pirnay, Christian Bastin, Vincent Lavielle, Jean-Marc Schumacher, Laurence Méant, Laurent Wéra, Eric Gabriel, Daniele Gallieni, Gilles Diolez, Jamie Dodge, Ben Gallagher, Arthur Mihill

Proceedings Volume 13094, 130941L (2024) https://doi.org/10.1117/12.3020199

KEYWORDS: Actuators, Mirrors, Design, Telescopes, Thirty Meter Telescope, Safety, Printing, Adaptive optics, Kinematics, Control systems, Mirror mounts

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Proceedings Article | 11 September 2024 Presentation + Paper

DAG (Dogu Anatolu Gözlemevi) telescope mount performances

G. Marchiori, F. Rampini, M. Amalfi, R. Bressan, L. Ghedin, C. Battistel, C. Manfrin, L. Vio, T. Niero, T. Marchiori, O. Pirnay, E. Gabriel, L. Meant, C. Yeşilyaprak, O. Keskin

Proceedings Volume 13094, 1309407 (2024) https://doi.org/10.1117/12.3023109

KEYWORDS: Telescopes, Control systems, Sensors, Observatories, Cooling systems, Interpolation, Human-machine interfaces, Switches, Head, Automation

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Proceedings Article | 25 July 2024 Presentation + Paper

Dogu Anadolu Gözlemevi (DAG) integrated dome and telescope on-site assembly

G. Marchiori, F. Rampini, M. Amalfi, R. Bressan, L. Ghedin, C. Battistel, C. Manfrin, L. Vio, T. Niero, T. Marchiori, O. Pirnay, E. Gabriel, L. Meant, C. Yeşilyaprak, O. Keskin

Proceedings Volume 13098, 130981E (2024) https://doi.org/10.1117/12.3023103

KEYWORDS: Telescopes, Automation, Safety, Domes, Observatories, Cooling systems, Mirrors, Control systems, Zoom lenses, Vacuum chambers

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Proceedings Article | 30 August 2022 Presentation + Paper

Status of the SALTO demonstrator: project overview and first on-sky operations

G. Orban de Xivry, J. Paul, O. Absil, C. Adam, P. Albart, C. Bastin, A. Boulanger, J. de Ville, E. Gabriel, L. Méant, V. Moreau, S. Orban, P. Remacle, F. Languy, M. Georges, J.-F. Vandenrijt, G. Millou, C. Nigot, V. Caramia

Proceedings Volume 12185, 1218534 (2022) https://doi.org/10.1117/12.2627936

KEYWORDS: Adaptive optics, Telescopes, Cameras, Calibration, Laser systems engineering, Wavefront sensors, Control systems, Mirrors, Atmospheric propagation, Actuators

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Proceedings Article | 29 August 2022 Poster + Paper

DAG 4m telescope: optics completion, on-site integration and test

Olivier Pirnay, Pierre Albart, Christian Bastin, Jonathan de Ville, Eric Gabriel, Thibault Leseur, Grégory Lousberg, Laurence Méant, Sabrina Orban, Jean-Marc Tortolani, Manfredi Amalfi, Gianpietro Marchiori, Francesco Rampini, Andrea Busatta, Cahit Yeşilyaprak, Onur Keskin

Proceedings Volume 12182, 121824A (2022) https://doi.org/10.1117/12.2632248

KEYWORDS: Mirrors, Telescopes, Active optics, Adaptive optics, Image quality, Optical alignment, Optical instrument design, Actuators

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AMOS with EIE as main subcontractor has recently completed the erection of the 4 m telescope located at the Turkish Eastern Anatolia Observatory (DAG) set up by the Ataturk University Astrophysics Research and Application Centre (ATASAM) of Erzurum. The telescope design is based on a Ritchey-Chrétien configuration with two folded Nasmyth focal planes and a focal length of 56m. The optical train is composed of three mirrors: the primary mirror (M1) with an optical aperture of 4m, a convex secondary mirror (M2), and a large flat folding mirror (M3). Diffraction-limited performances in optical and near infrared spectral bands will be achieved thanks to the combination of active and adaptive optics systems. The active optics system is controlling the shape of the primary mirror by means of 66 axial force actuators and position actively the secondary and tertiary mirrors by means of hexapods. The adaptive optics system will be implemented at one of the two Nasmyth ports. As main contractor, AMOS is in charge of the overall project management, the system engineering, the optical design and the active optics development. As main sub-contractor and partner of AMOS, EIE is in charge of the development of the mount. Following the factory acceptance in Europe, the telescope was dismounted and delivered in early 2021. The activities onsite were carried out according to the assembly, integration and verification plan (AIV plan). In the meantime, the fabrication of the 4 m primary mirror was completed, and the full set of mirrors was forwarded on-site before the end of the year 2021. In this paper is presented a brief description of the design and performances of the telescope followed by the project progress status at the time the optics are being integrated in the telescope for the first time. This includes the review of the mirrors as-built quality and the excepted performances of the telescope mount after alignment and tuning. The path forward final acceptance is explained with the presentation of the optical alignment method and the test carried-out on-sky.

Proceedings Article | 25 August 2022 Presentation + Paper

Mount Abu 2.5m Telescope: first light and performance assessment

Christian Bastin, Gregory Lousberg, Olivier Pirnay, Cédric Adam, Pierre Albart, Jonathan De Ville, Alexis Feutry, Carlo Flebus, Nicolas Fontana, Eric Gabriel, Audrey Lanotte, Fabien Lemagne, Thibault Leseur, Laurence Méant, Nathalie Ninane, Sabrina Orban, Jean-Marc Tortolani, Jonathan Verspecht

Proceedings Volume 12187, 121870H (2022) https://doi.org/10.1117/12.2632285

KEYWORDS: Telescopes, Active optics, Mirrors, Optical alignment, Optics manufacturing, Image quality, Cameras, Wavefronts, Wavefront sensors, Optical testing

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