Results 21 to 30 of about 118,114 (295)
On-sky results of the adaptive optics MACAO for the new IR-spectrograph CRIRES at VLT [PDF]
, 2006 The adaptive optics MACAO has been implemented in 6 focii of the VLT observatory, in three different flavors. We present in this paper the results obtained during the commissioning of the last of these units, MACAO-CRIRES.
Biereichel, P. +18 more
core +3 more sources
ALFA: First Operational Experience of the MPE/MPIA Laser Guide Star System for Adaptive Optics [PDF]
, 1998 The sodium laser guide star adaptive optics system ALFA has been constructed at the Calar Alto 3.5-m telescope. Following the first detection of the laser beacon on the wavefront sensor in 1997 the system is now being optimized for best performance.
Davies, R. I. +7 more
core +3 more sources
A Global Decoupling Control Algorithm for LC-DM Adaptive Optics System
IEEE Access, 2021 The liquid crystal (LC) and deformable mirror (DM) cascaded adaptive optics (AO) system can be used to effectively extend the imaging waveband of a large aperture telescope from the infrared to the visible waveband. However, to maintain the effectiveness
Yukun Wang +4 more
doaj +1 more source
System theoretic tools in adaptive optics [PDF]
2009 IEEE International Conference on Control and Automation, 2009 Adaptive Optics (AO) systems provide a real challenge to the control engineer in many respects, the foremost of which are scalability and computational complexity of the control algorithms. On the other hand, systems theoretic tools can be applied to look at several problems under new perspectives.
BEGHI, ALESSANDRO +2 more
openaire +2 more sources
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 +7 more
doaj +1 more source
Reconstruction of wavefront distorted by atmospheric turbulence using a Shack-Hartman sensor [PDF]
Компьютерная оптика, 2019 The reconstruction of a wave front containing random phase distortions of the light field is considered. The reconstruction is performed by a Hartmann method based on the approximation of the wave function by Zernike polynomials using estimates of local ...
Vitaly Lavrinov, Lidiya Lavrinova
doaj +1 more source
Modeling update for the Thirty Meter Telescope laser guide star dual-conjugate adaptive optics system [PDF]
, 2010 This paper describes the modeling efforts undertaken in the past couple of years to derive wavefront error (WFE) performance estimates for the Narrow Field Infrared Adaptive Optics System (NFIRAOS), which is the facility laser guide star (LGS) dual ...
Ellerbroek, Brent +2 more
core +1 more source
High-speed adaptive optics line scan confocal retinal imaging for human eye. [PDF]
PLoS ONE, 2017 PURPOSE:Continuous and rapid eye movement causes significant intraframe distortion in adaptive optics high resolution retinal imaging. To minimize this artifact, we developed a high speed adaptive optics line scan confocal retinal imaging system. METHODS:
Jing Lu +3 more
doaj +1 more source
The Performance of the Robo-AO Laser Guide Star Adaptive Optics System at the Kitt Peak 2.1-m Telescope [PDF]
, 2017 Robo-AO is an autonomous laser guide star adaptive optics system recently commissioned at the Kitt Peak 2.1-m telescope. Now operating every clear night, Robo-AO at the 2.1-m telescope is the first dedicated adaptive optics observatory.
Baranec, Christoph +7 more
core +3 more sources
Intelligent Optical Systems Using Adaptive Optics [PDF]
Advances in Science and Technology, 2012 Until recently, the phrase adaptive optics generally conjured images of large deformable mirrors being integrated into telescopes to compensate for atmospheric turbulence. However, the development of smaller, cheaper devices has sparked interest for other aerospace and commercial applications.
openaire +1 more source