Results 21 to 30 of about 1,509,291 (304)

Commissioning of ARGOS at LBT: adaptive optics procedures [PDF]

, 2015
ARGOS is the laser guide star facility of the Large Binocular Telescope (LBT). It implements a Rayleigh Laser Guide Star system that provides Ground Layer Adaptive Optics (GLAO) correction for the LUCIs, the 2 wide- field near-infrared imagers and multi ...
Deysenroth, Matthias, Gaessler, Wolfgang, Raab, Walfried, Raab, W., Organ de Xivry, G., Storm, J., Peter, D., Puglisi, Alfio, Sivitilli, A., Gemperlien, H., Gemperlein, Hans, Kulas, M., ESPOSITO, Simone, Borelli, Jose, Rabien, Sebastian, PUGLISI, Alfio Timothy, Ziegleder, Julian, Orban de Xivry, Gilles, Rahmer, G., Mazzoni, Tommaso, Sivitilli, Alex, Storm, Jesper, BONAGLIA, MARCO, Rahmer, Gustavo, Lefebvre, Michael, Peter, Diethard, Mazzoni, T., Lefebvre, M., Kulas, Martin, Ziegleder, J., BUSONI, LORENZO, Rabien, S., Deysenroth, M., Borelli, J., Bonaglia, M., Busoni, L., Puglisi, A., Esposito, S., Gaessler, W., Gemperlein, H.   +39 more
core   +1 more source

MAORY: adaptive optics module for the E-ELT [PDF]

, 2016
MAORY is one of the four instruments for the E-ELT approved for construction. It is an adaptive optics module offering two compensation modes: multi-conjugate and single-conjugate adaptive optics. The project has recently entered its phase B.
FANTINEL, Daniela, FIORENTINO, Giuliana, FOPPIANI, ITALO, Magnard, Y., Oberti, S., Felini, C., Roussel, F., MANNUCCI, FILIPPO, Sztefek, M. -H., BRIGUGLIO PELLEGRINO, RUNA ANTONIO, Brissaud, O., Roux, A., ESPOSITO, Simone, DIOLAITI, EMILIANO, Moulin, T., PUGLISI, Alfio Timothy, Stadler, E., Lafrasse, S., Michaud, L., DE PASCALE, Marco, Hénault, F., Le Louarn, M., DI RICO, Gianluca, FONTANA, Adriano, ABICCA, Renata, LOMBINI, MATTEO, RIVA, Marco, GIRO, Enrico, Rabou, P., Fini, L., FERRUZZI, Debora, Rochat, S., La Penna, P., Carlotti, A., MORGANTE, GIANLUCA, RICCIARDI, SARA, Jocou, L., Mapelli, M., Zerbi, F. M., Lauria, M., Marchetti, E., Delboulbé, A., XOMPERO, MARCO, BILIOTTI, Valdemaro, GHIGO, Mauro, Maurel, D., Cosentino, G., le Coarer, E., SCHREIBER, LAURA, ARCIDIACONO, CARMELO, Kerber, F., Gluck, L., Correia, J. -J., Ramsay, S., Giordano, C., SPAVONE, MARILENA, AGAPITO, GUIDO, MAIORANO, Elisabetta, Vérinaud, C., CASCONE, Enrico, PARESCHI, Giovanni, BONAGLIA, MARCO, DE CAPRIO, VINCENZO, SALASNICH, Bernardo, De Rosa, A., Ventura, N., BREGOLI, Giovanni, CORTECCHIA, Fausto, CILIEGI, Paolo, BARUFFOLO, Andrea, CARBONARO, LUCA, BELLAZZINI, Michele, BUSONI, LORENZO, RICCARDI, Armando, Feautrier, P., Patti, Mauro, SARACCO, Paolo, DEL VECCHIO, Ciro, RAGAZZONI, Roberto   +78 more
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PASSATA: object oriented numerical simulation software for adaptive optics [PDF]

, 2016
We present the last version of the PyrAmid Simulator Software for Adaptive opTics Arcetri (PASSATA), an IDL and CUDA based object oriented software developed in the Adaptive Optics group of the Arcetri observatory for Monte-Carlo end-to-end adaptive ...
ESPOSITO, Simone, PUGLISI, Alfio Timothy, G. Agapito, S. Esposito, AGAPITO, GUIDO, A. Puglisi   +5 more
core   +1 more source

An Image-Based Alignment Errors Correction Method for Segmented Fresnel Primary Mirror

IEEE Photonics Journal, 2020
The alignment errors correction of segmented Fresnel primary mirror in multiple imaging scenes is simulated. Based on the linear relationship between five kinds of alignment errors and modulation transfer function metric or image frequency domain metric,
Licheng Zhu, Ping Yang, Lianghua Wen, Lujia Zhao, Chunlin Guan, Bing Xu   +5 more
doaj   +1 more source

Experimental Demonstration of Central-Lobe Energy Enhancement Based on Amplitude Modulation of Beamlets in 19 Elements Fiber Laser Phased Array

IEEE Photonics Journal, 2021
Coherent beam combination of fiber laser phased array is a promising technique to achieve high-brightness laser output. In this paper, we focus on central-lobe energy enhancement of the combined beam in the far-field by theoretically and experimentally ...
Jing Zuo, Feng Li, Chao Geng, Fan Zou, Jiali Jiang, Jiaying Liu, Xu Yang, Tao Yu, Guan Huang, Zhihua Fan, Bincheng Li, Xinyang Li   +11 more
doaj   +1 more source

Design and Experimental Validation of a Model-Free Controller for Beam Stabilization in Adaptive Optics Systems

IEEE Photonics Journal
Stabilization of optical beams has always been a key factor affecting the performance of many optical systems. The Adaptive optics (AO) beam stabilization system requires further development to cope with increasingly complex application scenarios and ...
Sicheng Guo, Tao Cheng, Kangjian Yang, Lingxi Kong, Chunxuan Su, Shuai Wang, Ping Yang   +6 more
doaj   +1 more source

Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems

IEEE Photonics Journal
As the number of wavefront sensor subapertures and deformable mirror actuators in adaptive optics systems increases, the computational time of the direct gradient wavefront control algorithm is excessively long, which is a major factor affecting the ...
Shenghu Liu, Wang Zhao, Shuai Wang, Kangjian Yang, Ping Yang, Hongli Guan, Han Guo, Ruifeng He   +7 more
doaj   +1 more source

Adaptive Optics Tip-Tilt Correction Based on Smith Predictor and Filter-Optimized Linear Active Disturbance Rejection Control Method

Sensors, 2023
A tip-tilt mirror (TTM) control method is designed to enhance the control bandwidth and ensure the rejection performance of the adaptive optics (AO) tip-tilt correction system.
Lingxi Kong, Kangjian Yang, Chunxuan Su, Sicheng Guo, Shuai Wang, Tao Cheng, Ping Yang   +6 more
doaj   +1 more source

Integrated modeling of the GMT laser tomography adaptive optics system [PDF]

, 2014
Laser Tomography Adaptive Optics (LTAO) is one of adaptive optics systems planned for the Giant Magellan Telescope (GMT). End-to-end simulation tools that are able to cope with the complexity and computational burden of the AO systems to be installed on ...
Piatrou, Piotr, Piotr Piatrou
core   +1 more source

Astronomical adaptive optics: a review

PhotoniX
Since the concept of adaptive optics(AO) was proposed in 1953, AO has become an indispensable technology for large aperture ground-based optical telescopes aimed at high resolution observations.
Changhui Rao, Libo Zhong, Youming Guo, Min Li, Lanqiang Zhang, Kai Wei   +5 more
doaj   +1 more source