Showing 681 - 700 results of 918 for search '"adaptive optics"', query time: 0.68s Refine Results
  1. 681

    A 45-element continuous facesheet surface micromachined deformable mirror for optical aberration correction by Weimin Wang, Fangrong Hu, Qiang Wang, Chuankai Qiu, Zexiang Chen, Jun Yao

    Published 2014-02-01
    “…A static aberration correction based on this DM is also demonstrated, which acts as a reference for the potential adaptive optics (AO) applications of the device.…”
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    Article
  2. 682

    Influence of Photon Beam and Motor Vibrations on At-Wavelength X-Ray Speckle Scanning Metrology by Naxi Tian, Hui Jiang, Hui Jiang, Hui Jiang, Lian Xue, Jianan Xie, Jianan Xie

    Published 2022-04-01
    “…By measuring wave front radii of curvature, X-ray optics can be high-precision aligned and adaptive optics can be used for compensating these wave front errors to pursue an aberration-free wave front. …”
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    Article
  3. 683

    The Deformable Mirror Demonstration Mission (DeMi) On-Orbit Analysis by Gubner, Jennifer N.

    Published 2022
    “…The Deformable Mirror Demonstration Mission (DeMi) is a 6U CubeSat mission to demonstrate the use of a 140 actuator microelectromechanical system (MEMS) deformable mirror (DM) and a closed-loop adaptive optics (AO) system in space. DeMi launched to the International Space Station (ISS) on the NG-13 Cygnus resupply mission on February 15, 2020 and was deployed from the ISS into a 51° inclination, 423 km average altitude low-Earth orbit on July 13, 2020. …”
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    Thesis
  4. 684

    Weighing black holes using open-loop focus corrections for LGS-AO observations of galaxy nuclei at Gemini Observatory by McDermid, R, Krajnovic, D, Cappellari, M, Trujillo, C, Christou, J, Davies, R

    Published 2010
    “…We present observations of early-type galaxies with laser guide star adaptive optics (LGS AO) obtained at Gemini North telescope using the NIFS integral field unit (IFU). …”
    Journal article
  5. 685

    Complex vectorial beam state manipulation through gradient index optics by He, C

    Published 2019
    “…Additionally, with the help of vectorial adaptive optics, preliminary demonstrations of the correction of the birefringence effect of a GRIN lens were shown both in its pupil domain and focal domain.…”
    Thesis
  6. 686

    Compact, modular and in-plane AOSLO for high-resolution retinal imaging by Young, L, Morris, T, Saunter, C, Smithson, H

    Published 2018
    “…<p>The adaptive optics scanning laser ophthalmoscope (AOSLO) was first developed in 2002 and since then the technology has been adopted in several laboratories around the world, for both clinical and psychophysical research. …”
    Journal article
  7. 687

    The Gemini NICI Planet-Finding Campaign by Liu, M, Wahhaj, Z, Biller, B, Nielsen, E, Chun, M, Close, L, Ftaclas, C, Hartung, M, Hayward, T, Clarke, F, Reid, I, Shkolnik, E, Tecza, M, Thatte, N, Alencar, S, Artymowicz, P, Boss, A, Burrows, A, Pino, E, Gregorio-Hetem, J, Ida, S, Kuchner, M, Lin, D, Toomey, D

    Published 2010
    “…NICI is the first instrument on a large telescope designed from the outset for high-contrast imaging, comprising a high-performance curvature adaptive optics system with a simultaneous dual-channel coronagraphic imager. …”
    Conference item
  8. 688

    WASP-3b: a strongly irradiated transiting gas-giant planet by Pollacco, D, Skillen, I, Cameron, A, Loeillet, B, Stempels, H, Bouchy, F, Gibson, N, Hebb, L, Hebrard, G, Joshi, Y, McDonald, I, Smalley, B, Smith, A, Street, R, Udry, S, West, R, Wilson, D, Wheatley, P, Aigrain, S, Alsubai, K, Benn, C, Bruce, V, Christian, D, Clarkson, W, Enoch, B

    Published 2008
    “…Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. …”
    Journal article
  9. 689

    IC 630: Piercing the veil of the nuclear gas by Durré, M, Mould, J, Schartmann, M, Uddin, SA, Cotter, G

    Published 2017
    “…With VLT-SINFONI and Gemini North-NIFS adaptive optics observations (plus supplementary ANU 2.3m WiFeS optical IFU observations), the excitation diagnostics of the nebular emission species show no sign of standard AGN engine excitation; the stellar velocity dispersion also indicate that a super-massive black hole (if one is present) is small (M• = 2:25 X 10^5 M⊙). …”
    Journal article
  10. 690

    Instrument concept and science case for the mid-IR E-ELT imager and spectrograph METIS by Brandl, B, Lenzen, R, Pantin, E, Glasse, A, Blommaert, J, Venema, L, Molster, F, Siebenmorgen, R, Kendrew, S, Baes, M, Böhnhardt, H, Brandner, W, Van Dishoeck, E, Henning, T, Käufl, H, Lagage, P, Moore, T, Waelkens, C, Van Der Werf, P

    Published 2010
    “…In addition, an IFU fed, high resolution spectrograph at L/M band will provide a spectral resolution of R ∼ 100,000 over a 0.4'' x 1.5'' FOV. The adaptive optics (AO) system is relatively simple, and METIS can reach its full performance with the adaptive correction provided by the telescope - and occasionally even under seeing limited conditions. …”
    Journal article
  11. 691
  12. 692

    Optical imaging of human cone photoreceptors directly following the capture of light. by Phillip Bedggood, Andrew Metha

    Published 2013-01-01
    “…The retina was simultaneously stimulated and observed with high intensity visible light at 1 kHz, using adaptive optics. There was marked variability between individual cones in both photosensitivity and pigment optical density, challenging the conventional assumption that photoreceptors act as identical subunits (coefficient of variation in rate of photoisomerization = 23%). …”
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    Article
  13. 693

    Active control of bright electron beams with RF optics for femtosecond microscopy by J. Williams, F. Zhou, T. Sun, Z. Tao, K. Chang, K. Makino, M. Berz, P. M. Duxbury, C.-Y. Ruan

    Published 2017-07-01
    “…These results benchmark the sensitivity and resolution from the fundamental beam brightness perspective and also validate the adaptive optics concept to enable delicate control of the density-dependent phase space structures to optimize the performance, including delivering ultrashort, monochromatic, high-dose, or coherent electron bunches.…”
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    Article
  14. 694

    Evidence of Flicker-Induced Functional Hyperaemia in the Smallest Vessels of the Human Retinal Blood Supply. by Angelina Duan, Phillip A Bedggood, Bang V Bui, Andrew B Metha

    Published 2016-01-01
    “…To assess these hypotheses in human neural tissue in vivo, we imaged the retinal microvasculature (diameters 3-28 μm) non-invasively, using adaptive optics, before and after delivery of focal (360 μm) patches of flickering visible light. …”
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    Article
  15. 695

    Multimodality imaging in macular telangiectasia 2: A clue to its pathogenesis by Lihteh Wu

    Published 2015-01-01
    “…Its pathogenesis remains unclear but multimodality imaging with FA, spectral domain OCT, adaptive optics, confocal blue reflectance and short wave fundus autofluorescence implicate Müller cells and macular pigment. …”
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    Article
  16. 696

    Dynamical Mass of the Young Brown Dwarf Companion PZ Tel B by Kyle Franson, Brendan P. Bowler

    Published 2023-01-01
    “…We have also acquired new Keck/NIRC2 adaptive optics imaging of the system, which increases the total baseline of relative astrometry to 15 yr. …”
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    Article
  17. 697

    Optical Coherence Tomography: A Brief Review by Nasser Moslehi Milani

    Published 2023-09-01
    “…Also we review recent emerging innovative OCT systems including Doppler OCT, polarization sensitive optical coherence tomography (PS-OCT), high resolution optical coherence tomography (HR-OCT), full field optical coherence tomography (FF-OCT), wide field optical coherence tomography (WF-OCT), optical coherence elastography (OCE), adaptive optics optical coherence tomography (AO-OCT), visible light optical coherence tomography (Vis-OCT), intraoperative optical coherence tomography (iOCT), hand-held optical coherence tomography (HH-OCT), and OCT in needle format.…”
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    Article
  18. 698

    Mapping the human parafoveal vascular network to understand flow variability in capillaries. by Srividya Neriyanuri, Phillip Bedggood, R C Andrew Symons, Andrew Metha

    Published 2023-01-01
    “…Detailed network connectivity analysis was undertaken in 3 healthy young subjects using flood-illuminated adaptive optics retinal imaging, with axial depth of vessels determined via optical coherence tomography angiography. …”
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    Article
  19. 699

    Hemodynamic and morphological changes of the central retinal artery in myopic eyes by Mei Zhao, Andrew Kwok-Cheung Lam, Michael Tin-Cheung Ying, Allen Ming-Yan Cheong

    Published 2022-05-01
    “…This cross-sectional study evaluated the hemodynamic and morphological characteristics concurrently in a large sample of healthy myopes, by using the color Doppler ultrasound and adaptive optics retinal camera. Results showed that the retrobulbar segment of CRA had a tendency of slightly reduced flow velocity in eyeballs with longer axial length, but the correlation was not significant after adjusting for the multiple correlations. …”
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    Article
  20. 700

    What makes a microsaccade? A review of 70 years research prompts a new detection method by Anna-Katharina Hauperich, Laura K. Young, Hannah E. Smithson

    Published 2020-03-01
    “…We have additionally applied our method to eye-movement data collected using an adaptive optics scanning laser ophthalmoscope (AOSLO), to show its adaptability to a fundamentally different method of data capture. …”
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    Article