Results 1 to 10 of about 142,915 (284)
Adaptive optics based on machine learning: a review
Adaptive optics techniques have been developed over the past half century and routinely used in large ground-based telescopes for more than 30 years. Although this technique has already been used in various applications, the basic setup and methods have ...
Youming Guo +7 more
doaj +3 more sources
Accounting for Polychromatic Light in Virtual Shack-Hartmann Wavefront Sensing
Virtual Shack-Hartmann wavefront sensing (vSHWS) has some significant advantages and is promising for aberration measurement in the field of biomedical optical imaging.
Xian Yue +5 more
doaj +1 more source
Correction performance of an adaptive optics (AO) system is severely limited by its system latency under high temporal frequency distortions. Wavefront prediction methods has been proven to be an effective way to compensate system delay.
Ning Wang +8 more
doaj +1 more source
Adaptive Gradient Estimation Stochastic Parallel Gradient Descent Algorithm for Laser Beam Cleanup
For a high-power slab solid-state laser, obtaining high output power and high output beam quality are the most important indicators. Adaptive optics systems can significantly improve beam qualities by compensating for the phase distortions of the laser ...
Shiqing Ma +8 more
doaj +1 more source
We propose an imaging method based on optical fiber bundle combined with micro-scanning technique for improving image quality without complex image reconstruction algorithms.
Jiali Jiang +11 more
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Atmospheric tomography with separate minimum variance laser and natural guide star mode control [PDF]
This paper introduces a novel, computationally efficient, and practical atmospheric tomography wavefront control architecture with separate minimum variance laser and natural guide star mode estimation.
Ellerbroek, B. L., Gilles, L.
core +1 more source
Atmospheric dispersion is a wavelength-dependent effect that affects astronomical observations performed using ground-based telescopes. The effect of atmospheric dispersion for a 4-meter telescope is analyzed and an atmospheric dispersion corrector (ADC)
Guoqing Gao +5 more
doaj +1 more source
Sky coverage modeling for the whole sky for laser guide star multiconjugate adaptive optics [PDF]
The scientific productivity of laser guide star adaptive optics systems strongly depends on the sky coverage, which describes the probability of finding natural guide stars for the tip/tilt wavefront sensor(s) to achieve a certain performance.
Andersen, David +2 more
core +1 more source
No-Reference Quality Assessment of Extended Target Adaptive Optics Images Using Deep Neural Network
This paper proposes a supervised deep neural network model for accomplishing highly efficient image quality assessment (IQA) for adaptive optics (AO) images.
Guoqing Gao +7 more
doaj +1 more source
The numerical simulation tool for the MAORY multiconjugate adaptive optics system [PDF]
The Multiconjugate Adaptive Optics RelaY (MAORY) is and Adaptive Optics module to be mounted on the ESO European-Extremely Large Telescope (E-ELT).
Agapito, Guido +16 more
core +2 more sources

