Zobrazeno 1 - 10
of 127
pro vyhledávání: '"M. Lloyd-Hart"'
Autor:
M. Lloyd-Hart
Publikováno v:
IEEE Spectrum. 40:22-29
The article discusses the technology called adaptive optics used in improving telescopes, enabling astronomers to capture clear, sharp images of the galaxies, stars, and planets that populate the universe. The technique brings together the latest in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::433d14aacbba38fc20d658db6d84699b
https://doi.org/10.1109/mspec.2003.1249975
https://doi.org/10.1109/mspec.2003.1249975
Autor:
L. Busoni, M. Rademacher, M. Thiel, Gerd Weigelt, T. Stalcup, Wolfgang Gässler, A. Quirrenbach, Richard F. Green, Nancy Ageorges, G. Brusa, Simone Esposito, G. Hölzl, Piero Salinari, Reinhard Genzel, Christian Schwab, Elena Masciadri, M. Lloyd Hart, Sebastian Rabien, Joar Brynnel, Roger Angel, Ric Davies, Richard W. Pogge, Lothar Strüder, Jesper Storm, M. Deysenroth, H-W. Rix, J. Ziegleder, Marcus Haug
Publikováno v:
SPIE Proceedings.
Laser guide star adaptive optics and interferometry are currently revolutionizing ground-based near-IR astronomy, as demonstrated at various large telescopes. The Large Binocular Telescope from the beginning included adaptive optics in the telescope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3616080880e972f17bbbfe8ae2264fec
https://doi.org/10.1117/12.788173
https://doi.org/10.1117/12.788173
Publikováno v:
CASE
The use of high speed adaptive secondary mirrors (AS) in cassegrain or Gregorian telescopes shows high optical efficiency as well as the possibility to make adaptive optics (AO) available at all foci. After 4 years of extensive and successful use of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b96afff60d09026b5559c77fb970b0da
https://doi.org/10.1109/coase.2007.4341799
https://doi.org/10.1109/coase.2007.4341799
Publikováno v:
SPIE Proceedings.
Experiments have been carried out at the MMT telescope in June 2005 and again in April 2006 to validate open loop tomographic wavefront reconstruction using five dynamically refocused Rayleigh laser beacons (RLGS) and multiple tilt natural guide star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00a0813b5aa6306d62cba4b8765df648
https://doi.org/10.1117/12.672529
https://doi.org/10.1117/12.672529
Publikováno v:
2004 IEEE International Joint Conference on Neural Networks (IEEE Cat. No.04CH37541).
A computationally efficient neural network-based scheme for wavefront reconstruction and restoration of turbulence-degraded imagery in Adaptive Optics (AO)-based telescopes is described in this paper. Currently popular methods for the estimation of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a22af0149f6042625173b80b88bf00
https://doi.org/10.1109/ijcnn.2004.1380944
https://doi.org/10.1109/ijcnn.2004.1380944
Autor:
Donald W. McCarthy, Matthew A. Kenworthy, Michael R. Meyer, D. Miller, G. Brusa, C. Kulesa, Dylan L. Curley, Patrick A. Young, W. M. Liu, Benjamin D. Oppenheimer, Philip M. Hinz, Francois Wildi, M. Lloyd-Hart, Don Fisher, Julia Greissl
Publikováno v:
Advancements in Adaptive Optics.
The Natural Guide Star Adaptive Optics (NGS AO) system for the MMT Observatory is currently the only AO system in the world that uses a deformable secondary mirror to provide wavefront correction. This approach has unique advantages in terms of optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15557818b0c47162381a8e0bb1ad68ed
https://doi.org/10.1117/12.551023
https://doi.org/10.1117/12.551023
A prototype cross-dispersed optical echelle spectrograph of very high resolution has been designed and built at Steward Observatory and tested at the Starfire Optical Range (SOR) 1.5 m telescope. It is the first spectrograph to take advantage of diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8e664f6e20e3733fbf14f264f3fffe3
Autor:
M. Lloyd-Hart, T. McMahon
This report outlines the focus of the development of advanced adaptive optics at the University of Arizona, Steward Observatory's Center for Astronomical Adaptive Optics (CAAO). The main focus of the development effort has been the design and develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07c55ffbbbcf35440bb5b383ce7b76a8
https://doi.org/10.21236/ada387632
https://doi.org/10.21236/ada387632
Autor:
E. K. Hege, M. Cheselka, M. Lloyd-Hart, P. Hinz, W.F. Hoffmann, J.C. Christou, S.M. Jefferies
Publikováno v:
Signal Recovery and Synthesis.
Iterative physical deconvolution is used for point spread function (psf) calibration of a wide range of astronomical imagery obtained in visible (CCD) through near- and mid-infrared (NICMOS and MIRAC) wavelengths. Psf complications, ranging from thos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e2df6b53485a96c98c7f7a9ff859ba3
https://doi.org/10.1364/srs.1998.stub.3
https://doi.org/10.1364/srs.1998.stub.3
Autor:
T. D. Groesbeck, M. Lloyd-Hart, J. R. P. Angel, D. W. McCarthy, G. Brusa, P. M. Gray, B. A. McLeod, S. Mohanty, T. Martinez, B. Jacobsen, D. M. Wittman, P. T. Ryan, D. G. Bruns, D. G. Sandler
Publikováno v:
Adaptive Optics.
The Center for Astronomical Adaptive Optics (CAAO) at the University of Arizona is developing a diffraction-limited adaptive optics (AO) system at infrared wavelengths utilizing a sodium laser guide star. This system (Lloyd-Hart et al., this conferen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2434543f2c4e4e40d72f73e423967c9a
https://doi.org/10.1364/adop.1996.amb.9
https://doi.org/10.1364/adop.1996.amb.9