Zobrazeno 1 - 10
of 194
pro vyhledávání: '"J. C. Dainty"'
Autor:
J. C. Dainty, S. Chiesa
Publikováno v:
Journal of Modern Optics. 59:1415-1427
We describe the calibration and performance of a pyramid wavefront sensor designed for use in a retinal imaging camera. The effect of the image modulation and the sensor binning on the measurements are explained in detail and various tests to validat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d88879f395860aed40a7993b598b08c
https://doi.org/10.1080/09500340.2012.717641
https://doi.org/10.1080/09500340.2012.717641
Publikováno v:
Journal of Modern Optics. 58:1716-1728
The use of additional adaptive optics to manipulate the beacon in an adaptive optics system for the human eye opens up many opportunities. Possibilities include better beacon creation, correction of gross aberrations that the beam acquires as it pass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe91d746f64f14e975afdd81bd5c637c
https://doi.org/10.1080/09500340.2011.575239
https://doi.org/10.1080/09500340.2011.575239
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 339:491-494
We present the results of contemporaneous seeing measurements using a multi-object Shack-Hartmann wavefront sensor, SCIDAR optical turbulence profiling, and a DIMM seeing monitor at the William Herschel Telescope in La Palma. The data are used to det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7559be6094736045779d517da9d42771
https://doi.org/10.1046/j.1365-8711.2003.06198.x
https://doi.org/10.1046/j.1365-8711.2003.06198.x
Autor:
T. Gregory, Nicholas James Wooder, F. C. Reavell, J. C. Quartel, Richard Wilson, J. B. Clifford, J. C. Dainty, L. Michaille
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 328:993-1000
We present the results of a mesospheric sodium monitoring programme at La Palma carried out through five campaigns of one week each, from 1999 September to 2000 August. The yearly averaged parameters of the layer (the sodium column density and the wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dd28b0c53b61cf6502ca38c478db5b4
https://doi.org/10.1046/j.1365-8711.2001.04703.x
https://doi.org/10.1046/j.1365-8711.2001.04703.x
Autor:
Yu. Yu. Balega, J. J. Fuensalida, P. Berlioz-Arthaud, J. C. Dainty, Éric Thiébaut, R. Foy, S. Altarac
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 322:141-148
We have analysed short-exposure high-resolution images obtained on the William HerschelTelescope (WHT), Big Telescope Azimuthal (BTA) and Canada–France–Hawaii Telescope(CFHT) in order to investigate mechanical vibrations that are capable of reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fbe883cf636280147bf367c11926ad4
https://doi.org/10.1046/j.1365-8711.2001.04111.x
https://doi.org/10.1046/j.1365-8711.2001.04111.x
Publikováno v:
New Astronomy Reviews. 45:69-72
Laser guide star adaptive optics will be implemented at all major observatories in the next decade. In this paper, we describe an experiment to monitor the short and long timescale variations of the altitude profile of mesospheric sodium. This experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ae2f01abe666d0e9561991649e941dc
https://doi.org/10.1016/s1387-6473(00)00131-7
https://doi.org/10.1016/s1387-6473(00)00131-7
Autor:
T. Gregory, J. C. Quartel, Richard Wilson, J. Maxwell, A. D. Cañas, Nicholas James Wooder, F. C. Reavell, L. Michaille, J. C. Dainty
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 318:139-144
We report the results of the first laser beacon experiment at the astronomical site of La Palma (Canary Islands). A continuous wave low power laser (a few hundreds of mW) system has been set up. The laser, tuned on the sodium D2 line at 589 nm, is la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1fabe920bd0e8b056515b9de808b50
https://doi.org/10.1046/j.1365-8711.2000.03699.x
https://doi.org/10.1046/j.1365-8711.2000.03699.x
Autor:
J C Quartel, J. C. Dainty
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 1:517-522
Despite the rapid growth of near-field optical microscopy in the past decade, many questions about the imaging properties of near-field microscopes remain unanswered. In this paper we describe a novel near-field optical microscope, employing CO2 lase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be0b3264036107dbabed0f997714f216
https://doi.org/10.1088/1464-4258/1/4/318
https://doi.org/10.1088/1464-4258/1/4/318
Autor:
Thomas W. Nicholls, Nicholas James Wooder, Ian Munro, J. C. Dainty, M. J. Adcock, V. A. Klückers
Publikováno v:
Astronomy and Astrophysics Supplement Series. 130:141-155
The measurement of the strength and veloc- ity of atmospheric optical turbulence using a generalised SCIDAR technique is outlined and demonstrated. This method allows the full turbulent prole to be characterised from the telescope pupil up to any des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1596258f5a2f50e457f2bbbb8308ebdc
https://doi.org/10.1051/aas:1998217
https://doi.org/10.1051/aas:1998217
Autor:
David D. Nolte, M. R. Melloch, Richard Jones, S.C.W. Hyde, Paul M. W. French, M. Tziraki, N.P. Barry, K. M. Kwolek, J. C. Dainty
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 4:360-369
We discuss a real-time coherence gated three-dimensional (3-D) imaging system, based on photorefractive holography with ultrashort pulses, which has been applied to imaging through turbid media with a view to developing biomedical instrumentation. Su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::264dd2acc9eb8f78a239162032775420
https://doi.org/10.1109/2944.686743
https://doi.org/10.1109/2944.686743