Showing 521 - 540 results of 918 for search '"adaptive optics"', query time: 0.33s Refine Results
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    Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2" without a coronagraph using spectral deconvolution by Thatte, N, Abuter, R, Tecza, M, Nielsen, E, Clarke, F, Close, L

    Published 2007
    “…We apply the method to the specific case of ground based adaptive optics fed integral field spectroscopy (without a coronagraph). …”
    Journal article
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    Active optics in astronomy – modeling of deformable substrates: freeform surfaces for FIREBall and MESSIER by Lemaitre Gérard Rene

    Published 2018-12-01
    “…For ground-based astronomy, the co-addition of adaptive optics again increases angular resolution up to providing diffraction-limited imaging at least in the infrared. …”
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    Article
  7. 527

    The second generation VLT instrument MUSE: Science drivers and instrument design by Bacon, R, Bauer, S, Bower, R, Cabrit, S, Cappellari, M, Carollo, M, Combes, F, Davies, R, Delabre, B, Dekker, H, Devriendt, J, Djidel, S, Duchateau, M, Dubois, J, Emsellem, E, Ferruit, P, Franx, M, Gilmore, G, Guiderdoni, B, Henault, F, Hubin, N, Jungwiert, B, Kelz, A, Le Louarn, M, Lewis, I

    Published 2004
    “…MUSE has a field of 1x1 arcmin(2) sampled at 0.20.2 arcsec(2) and is assisted by a ground layer adaptive optics system using four laser guide stars. The simultaneous spectral range is 0.465-0.93 mum, at a resolution of Rsimilar to3000. …”
    Conference item
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    Analysis of macular cone photoreceptors in a case of occult macular dystrophy by Tojo N, Nakamura T, Ozaki H, Oka M, Oiwake T, Hayashi A

    Published 2013-05-01
    “…AO images were found to be useful to evaluate morphologic changes in cone photoreceptors in patients with OMD.Keywords: occult macular dystrophy, adaptive optics, cone photoreceptor, cone analysis, optical coherence tomography…”
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    Article
  10. 530
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    MUSE: A second-generation integral-field spectrograph for the VLT by McDermid, R, Bacon, R, Bauer, S, Boehn, P, Boudon, D, Brau-Nogue, S, Caillier, P, Capoani, L, Carollo, C, Champavert, N, Contini, T, Daguise, E, Delabre, B, Devriendt, J, Dreizler, S, Dubois, J, Dupieux, M, Dupin, J, Emsellem, E, Ferruit, P, Franx, M, Callou, G, Gerssen, J, Guiderdoni, B, Hahn, T

    Published 2008
    “…We overview the technical and scientific aspects of MUSE, highlighting the key challenges for dealing with the unprecedented quantity and complexity of the data, and the integration with the VLT adaptive optics facility (AOF) - a key development on the path to extremely large telescopes (ELTs). © 2008 Springer-Verlag Berlin Heidelberg.…”
    Conference item
  13. 533

    Probing unexplored territories with MUSE: a second generation instrument for the VLT by Bacon, R, Bauer, S, Boehm, P, Boudon, D, Brau-Nogue, S, Caillier, P, Capoani, L, Carollo, C, Champavert, N, Contini, T, Daguise, E, Dalle, D, Delabre, B, Devriendt, J, Dreizler, S, Dubois, J, Dupieux, M, Dupin, J, Emsellem, E, Ferruit, P, Franx, M, Gallou, G, Gerssen, J, Guiderdoni, B, Hahn, T

    Published 2006
    “…MUSE has a field of 1x1 arcmin**2 sampled at 0.2x0.2 arcsec**2 and is assisted by the VLT ground layer adaptive optics ESO facility using four laser guide stars. …”
    Conference item
  14. 534

    Advances in multimodal imaging in ophthalmology by Morgan J. Ringel, Eric M. Tang, Yuankai K. Tao

    Published 2021-03-01
    “…These systems include advanced acquisition and post-processing methods using optical coherence tomography (OCT), combined scanning laser ophthalmoscopy and OCT systems, adaptive optics, surgical guidance, and photoacoustic technologies. …”
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    Article
  15. 535

    Autoguidance improves IR spectrograph resolution by Freeman, D, Thatte, N, Kroker, H

    Published 1996
    “…Near-infrared imaging spectroscopy at spatial resolutions of 0.5 arc sec can already be achieved by combining the spatial and spectral resolution of an IR-imaging spectrometer with a first-oreder adaptive-optics system and accurate autoguider. This development makes high-resolution near-IR imaging spectroscopy possible for astronomy.…”
    Journal article
  16. 536

    In vivo chromatic and spatial tuning of foveolar retinal ganglion cells in Macaca fascicularis. by Tyler Godat, Nicolas P Cottaris, Sara Patterson, Kendall Kohout, Keith Parkins, Qiang Yang, Jennifer M Strazzeri, Juliette E McGregor, David H Brainard, William H Merigan, David R Williams

    Published 2022-01-01
    “…By characterizing the functional properties of retinal ganglion cells in vivo through adaptive optics, we characterize the response characteristics of these cells in situ.…”
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    Article
  17. 537

    Relationship Between Retinal Microcirculation and Renal Function in Patients with Diabetes and Chronic Kidney Disease by Laser Speckle Flowgraphy by Takeshi Iwase, Yoshitaka Ueno, Ryo Tomita, Hiroko Terasaki

    Published 2023-02-01
    “…This study investigated the effect of renal dysfunction categorized by the stage of chronic kidney disease (CKD) on the retinal microcirculation assessed by laser speckle flowgraphy (LSFG) and retinal artery caliber measured by adaptive optics imaging in diabetic patients particularly the early stage of retinopathy and nephropathy. …”
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    Article
  18. 538

    Effect of Wavefront Distortion in Non-Kolmogorov Turbulence on the Performance of Multi-Beam Transmission Coherent Detection by Chenghu Ke, Tian Xing, Xizheng Ke

    Published 2023-06-01
    “…The influence of factors such as spectral power-law index, zenith angle, and transmission distance on the communication performance of the system is analyzed, and an experimental system is built using adaptive optics equipment to test the proposed theory. …”
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    Article
  19. 539

    In vivo chromatic and spatial tuning of foveolar retinal ganglion cells in Macaca fascicularis by Tyler Godat, Nicolas P. Cottaris, Sara Patterson, Kendall Kohout, Keith Parkins, Qiang Yang, Jennifer M. Strazzeri, Juliette E. McGregor, David H. Brainard, William H. Merigan, David R. Williams

    Published 2022-01-01
    “…By characterizing the functional properties of retinal ganglion cells in vivo through adaptive optics, we characterize the response characteristics of these cells in situ.…”
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    Article
  20. 540

    Modeling coronagraphic extreme wavefront control systems for high contrast imaging in ground and space telescope missions by Lumbres, Jennifer, Males, Jared R., Douglas, Ewan S., Close, Laird M., Cahoy, Kerri L., Carlton, Ashley K., Clark, James, Doelman, David S., Feinberg, Lee D., Guyon, Olivier, Knight, Justin, Marlow, Weston, Miller, Kelsey L., Morzinski, Katie M., Por, Emiel H., Rodack, Alexander T., Schatz, Lauren, Snik, Frans, Van Gorkom, Kyle, Wilby, Michael J.

    Published 2021
    “…The challenges of high contrast imaging (HCI) for detecting exoplanets for both ground and space applications can be met with extreme adaptive optics (ExAO), a high-order adaptive optics system that performs wavefront sensing (WFS) and correction at high speed. …”
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    Article