Results 211 to 220 of about 345,237 (255)

First lab results of segment/petal phasing with a pyramid wavefront sensor and a novel holographic dispersed fringe sensor (HDFS) from the Giant Magellan Telescope high contrast adaptive optics phasing testbed

Astronomical Telescopes + Instrumentation, 2022
The Giant Magellan Telescope (GMT) design consists of seven circular 8.4-m diameter mirror segments that are separated by large > 30 cm gaps, making them susceptible to fluctuations in optical path differences (piston) due to flexure, segment vibrations,
A. Hedglen, L. Close, S. Haffert, J. Males, M. Kautz, A. Bouchez, R. Demers, F. Quirós-Pacheco, B. Sitarski, O. Guyon, Kyle Van Gorkom, J. Long, J. Lumbres, L. Schatz, K. Miller, A. Rodack, J. Knight   +16 more
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The MICADO first light imager for the ELT: relay optics opto-mechanical final design

Astronomical Telescopes + Instrumentation, 2022
MICADO is the Multi-AO Imaging Camera for Deep Observations, a first light instrument for the Extremely Large Telescope (ELT). The instrument will be assisted by a Single-Conjugate Adaptive Optics (SCAO) system and the Multi conjugate Adaptive Optics ...
S. Barboza, A. Boné, G. Rodeghiero, R. Harris, Joshua Jost, J. Pott, R. Rohloff, F. Müller, R. Hofferbert, P. Bizenberger, J. Ramos, N. Münch, L. Mohr, Paula Stępień, Wolfram Schlossmacher, M. Müller   +15 more
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The MICADO first light imager for the ELT: a comprehensive tolerance analysis for the relay optics

Astronomical Telescopes + Instrumentation, 2022
MICADO is the Multi-AO Imaging Camera for Deep Observations, a first light instrument for the Extremely Large Telescope (ELT). The instrument provides imaging, astrometric, spectroscopic and coronographic observing modes.
A. Boné, S. Barboza, Robert J. Harris, G. Rodeghiero, J. Pott, R. Rohloff, F. Müller, R. Hofferbert, P. Bizenberger, J. Ramos, N. Münch   +10 more
semanticscholar   +1 more source

Object-independent piston diagnosing approach for segmented optical mirrors via deep convolutional neural network.

Applied Optics, 2020
Piston diagnosing approaches based on neural networks have shown great success, while a few methods are heavily dependent on the imaging target of the optical system. In addition, they are inevitably faced with the interference of submirrors.
Mei Hui, Weiqian Li, Ming Liu, Liquan Dong, Lingqin Kong, Yuejin Zhao   +5 more
semanticscholar   +1 more source

The Giant Magellan Telescope’s high contrast adaptive optics testbed: NGAO wavefront sensing and control laboratory results

Astronomical Telescopes + Instrumentation
The Natural Guide-star Adaptive Optics (NGAO) mode of the Giant Magellan Telescope (GMT) is one of the two diffraction-limited AO modes under development by GMTO and its partner institutions.
F. Quirós-Pacheco, A. Bouchez, C. Plantet, Bo Xin, Jordi Molgó, William Schoenell, Alfio T. Puglisi, Fabio Rossi, Patricio Schurter, J. Haddad, R. Demers, Simone Esposito, A. Cheffot, Nicolò Azzaroli, L. Carbonaro, T. Lapucci, E. Pinna, Laird M. Close, S. Haffert, M. Kautz, J. Males, A. Mcleod, A. Hedglen, V. Gasho, Marcos A. van Dam   +24 more
semanticscholar   +1 more source

Model driven-based extended target piston sensing for optical synthesis aperture imaging system

Applied Optics and Photonics China
The next generation of Earth observation on-orbit optical telescopes will provide high-resolution imaging of complex scene by using the aperture synthesis technique. Fast correction of pistons among each subaperture is the critical factor to preserve the
Kaiyuan Yang, Xiafei Ma, Haotong Ma, Zongliang Xie   +3 more
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Piston error correction of sparse aperture systems using the metaheuristic stochastic parallel gradient descent algorithm.

Applied Optics, 2020
The next generation of optical telescopes will provide high-resolution imaging of celestial objects by using the aperture synthesis technique. To preserve the quality of the image, fast corrections of the pistons among subapertures have to be applied ...
Kaiyuan Yang, Zongliang Xie, Haotong Ma, Hongyi Hu, Bo Qi, Jianliang Shi, Qiang Wang, Wenyi Lv   +7 more
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The MICADO first light imager for the ELT: starting manufacturing of the relay optics

Astronomical Telescopes + Instrumentation
MICADO is the Multi-AO Imaging Camera for Deep Observations, a first light instrument for the Extremely Large Telescope (ELT). The instrument will be assisted by a Single-Conjugate Adaptive Optics (SCAO) system and the Multiconjugate adaptive Optics ...
S. Barboza, André Boné, R. Rohloff, Friedrich Müller, R. Hofferbert, José Ramos, J. Pott, Norbert Münch, Armin Böhn, Tobias Stadler, Tobias Maurer, P. Bizenberger, David Serrano, Wolfram Schlossmacher, Helmut Espig, James Mulherin, Christopher Hall, Michael Demarco   +17 more
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Adaptive optics development at the Giant Magellan Telescope: recent progress

Astronomical Telescopes + Instrumentation
In the past two years significant forward progress has been achieved in development of Adaptive Optics sensing and control technology needed for the observation modes of the Giant Magellan Telescope1.
R. Demers, F. Quirós-Pacheco, Patricio Schurter, Bo Xin, J. Haddad, Jordi Molgó, William Schoenell, Rod Conan, Rodrigo Romano, A. Bouchez, Marcos A. van Dam, Daniel Catropa, J. Kansky, Brian Mcleod, S. McMuldroch, William Podgorski, Mark Witinski, Laird M. Close, V. Gasho, S. Haffert, A. Hedglen, M. Kautz, J. Males, C. Plantet, Alfio T. Puglisi, Fabio Rossi, A. Cheffot, Nicolò Azzaroli, L. Carbonaro, T. Lapucci, E. Pinna, Simone Esposito, C. d’Orgeville, Noelia Mart́ınez Rey, T. Travouillon, B. Nemati, Guillermo Gonzalez, Joel Nissen   +37 more
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Software development and integration of an adaptive-optics testbed using the Giant Magellan Telescope software frameworks

Astronomical Telescopes + Instrumentation
The Giant Magellan Telescope (GMT) is a next-generation ground-based segmented telescope. In the last few years, significant progress has been made by the GMT team and partners to design a natural guide-star wavefront control strategy that can reliably ...
Jordi Molgó, William Schoenell, J. Filgueira, F. Quirós-Pacheco, Alfio T. Puglisi, Fabio Rossi, T. Lapucci, A. Bouchez, Bo Xin, Patricio Schurter, R. Demers, Laird M. Close, S. Haffert, M. Kautz, J. Males, Marianne Cox, José Soto, Chien Peng, Hector Swett, Chris Contaxis, Jorge Barrios, Gibreel El-Halabi, Paulo H. Silva   +22 more
semanticscholar   +1 more source