Results 31 to 40 of about 142,915 (284)
Real-time turbulence profiling with a pair of laser guide star Shack–Hartmann wavefront sensors for wide-field adaptive optics systems on large to extremely large telescopes [PDF]
, 2010 Real-time turbulence profiling is necessary to tune tomographic wavefront reconstruction algorithms for wide-field adaptive optics (AO) systems on large to extremely large telescopes, and to perform a variety of image post-processing tasks involving ...
Ellerbroek, B. L., Gilles, L.
core +1 more source
Astronomical adaptive optics: a review
PhotoniXSince 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 +5 more
doaj +1 more source
ARSOD-YOLO: Enhancing Small Target Detection for Remote Sensing Images
SensorsRemote sensing images play a vital role in domains including environmental monitoring, agriculture, and autonomous driving. However, the detection of targets in remote sensing images remains a challenging task. This study introduces innovative methods to
Yijuan Qiu +5 more
doaj +1 more source
Pupil stabilization for SPHERE's extreme AO and high performance coronagraph system [PDF]
, 2007 We propose a new concept of pupil motion sensor for astronomical adaptive optics systems and present experimental results obtained during the first laboratory validation of this concept.
Beuzit, J. -L. +5 more
core +2 more sources
FEBS Letters, EarlyView.Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer +7 more
wiley +1 more source
PhotonicsThe tip–tilt mirror (TTM) is an important component of adaptive optics (AO) to achieve beam stabilization and pointing tracking. In many practical applications, the information of accurate TTM dynamics, complete system state, and noise characteristics is
Sicheng Guo +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 +6 more
doaj +1 more source
Optimization of Virtual Shack-Hartmann Wavefront Sensing
Sensors, 2021 Virtual Shack–Hartmann wavefront sensing (vSHWS) can flexibly adjust parameters to meet different requirements without changing the system, and it is a promising means for aberration measurement.
Xian Yue +5 more
doaj +1 more source
Extragalactic Fields Optimized for Adaptive Optics
, 2011 In this paper we present the coordinates of 67 55' x 55' patches of sky which have the rare combination of both high stellar surface density (>0.5 arcmin^{-2} with ...
Bonaccini D. +17 more
core +1 more source
The jet of the BL Lac object PKS 0521 -365 in the near-IR : MAD adaptive optics observations [PDF]
, 2009 BL Lac objects are low--power active nuclei exhibiting a variety of peculiar properties that are caused by the presence of a relativistic jet and orientation effects.
A., Treves +16 more
core +2 more sources