Results 51 to 60 of about 1,509,291 (304)

Optimising the NAOMI adaptive optics real-time control system [PDF]

, 2008
This thesis describes the author's research in the field of Real-Time Control (RTC) for Adaptive Optics (AO) instrumentation. The research encompasses experiences and knowledge gained working in the area of RTC on astronomical instrumentation projects ...
Goodsell, S. J., Goodsell, S J
core  

The GMT adaptive optics system

, 2016
The design of the adaptive optics (AO) system for the GMT is currently being developed. The baseline system is planned around a segmented adaptive secondary mirror (ASM), with elements similar in size to current ASM's for 8 m telescopes.
McGregor, Peter, McLeod, Brian A, Bouchez, A, Hart, Michael, Hinz, Philip, Johns, Matt, Shectman, Stephen   +6 more
core   +1 more source

MAVIS Adaptive Optics Module: optical configuration and expected performance

, 2022
The MCAO Assisted Visible Imager and Spectrograph (MAVIS) is currently in preliminary design for the ESO VLT. The instrument will provide multi-conjugate adaptive optics correction over a wide field of 30”x30”, feeding the visible part of the spectrum ...
Chinellato, Simonetta, Rigaut, François, Demetrio Magrin, David Brodrick, Simonetta Chinellato, Stefan Ströbele, Pinna, Enrico, Davide Greggio, Maria Bergomi, Aliverti, Matteo, Vaughn, Israel, Magrin, Demetrio, Israel Vaughn, Ströbele, Stefan, Kalyan Radhakrishnan, Guido Agapito, Brodrick, David, Cranney, Jesse, Taylor, Brian, Christian Schwab, Bergomi, Maria, Brian W. Taylor, Bonaglia, Marco, Greggio, Davide, Marafatto, Luca, Matteo Aliverti, Agapito, Guido, Marco Bonaglia, Valentina Viotto, Luca Marafatto, Schwab, Christian, Jesse Cranney, Radhakrishnan, Kalyan, Enrico Pinna, Viotto, Valentina, François Rigaut   +35 more
core   +1 more source

Tip–Tilt Aberration Compensation for Laser Array Atmospheric Propagation Based on Cooperative Beacons

Photonics
Laser beam combining is essential for achieving high-power and high-radiance output. However, atmospheric turbulence induces independent tip–tilt aberrations across discrete sub-beams in laser array systems, which severely degrades the concentration of ...
Xiaohan Mei, Yi Tan, Ce Wang, Jiayao Wu, Ping Yang, Shuai Wang   +5 more
doaj   +1 more source

Accurate Light Field Depth Estimation Using Multi-Orientation Partial Angular Coherence

IEEE Access, 2019
Occlusion is a critical issue that affects the accuracy for light field depth estimation. In the presence of occlusions, the photo-consistency property is broken, making ambiguity near occlusion areas.
Zhenghua Guo, Junlong Wu, Xianfeng Chen, Shuai Ma, Licheng Zhu, Ping Yang, Bing Xu   +6 more
doaj   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Optical design of the Wavefront sensing in the ULTIMATE-Subaru Ground Layer Adaptive Optics system

, 2022
ULTIMATE-Subaru (Ultra-wide Laser Tomographic Imager and MOS with AO Transcendent Exploration) is the next-generation development project of the Subaru Telescope in Hawaii, U.S.A.
Rigaut, Francois, Noelia Martínez Rey, David Chandler, Vaughn, Israel, Israel Vaughn, Yosuke Minowa, Rey, Noelia Martinez, Céline d'Orgeville, Herrald, Nicholas, D'Orgeville, Celine, Koki Terao, Schofield, Warrick, Warrick Schofield, Yoshito . Ono, Terao, Koki, Minowa, Yosuke, Yoko Tanaka, Ono, Yoshito, Akiyama, Masayuki, Chandler, David, Masayuki Akiyama, Yoshida, Hiroshige, Tanaka, Yoko, Haynes, Dionne, Nicholas Herrald, Hiroshige Yoshida, Dionne Haynes, François Rigaut   +27 more
core   +1 more source

Multi-Aperture Adaptive Fiber-Coupled Free-Space Optical Communication System: Scintillation Mitigation and Turbulence Compensation Experiment Based on Gamma-Gamma Channel Modeling

IEEE Photonics Journal
Free-space optical communication is an effective alternative solution to address the “last mile” bottleneck in fiber-optic communication systems.
Ziting Pan, Yuting Li, Yijie Shen, Ziqiang Li, Guan Huang, Chao Geng, Xinyang Li   +6 more
doaj   +1 more source

A Real-Time Measurement System for Atmospheric Turbulence Intensity and Distribution Based on the GLAO System

Applied Sciences, 2023
Measuring the intensity and distribution of atmospheric optical turbulence at large-aperture astronomical telescope sites is crucial to optimizing turbulence correction for different layers.
Xian Ran, Lanqiang Zhang, Hua Bao, Xuejun Rao, Jinsheng Yang, Dingkang Tong, Cheng Wang, Changhui Rao   +7 more
doaj   +1 more source

Optical characterization and adaptive optics correction of polymer adaptive lens aberrations

Applied Optics, 2018
Adaptive lenses based on fluid-filled polymer membranes allow for great simplification of optical systems providing large focal length variation and reduction of size, weight, and power consumption. However, aberrations can reduce their optical quality and, for some demanding applications, their correction by means of adaptive optics implies increased ...
M. Quintavalla, F. Santiago, S. Bonora, S. Restaino   +3 more
openaire   +3 more sources