Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Valeri V. Voitsekhovich"'
Publikováno v:
Journal of Turbulence. 18:560-568
Karhunen–Loeve functions for the case of non-Kolmogorov turbulence are calculated. The calculations are performed using the covariance matrix of Zernike coefficients which is derived in analytical form. It is shown that the Karhunen–Loeve expansi
Autor:
William J. Schuster, O. Harris, L. Parrao, Julien Borgnino, Fernando Ángeles, Valeri G. Orlov, Jean Vernin, Rafael Costero, M. T. Tapia, R. Conan, Remy Avila, Irene Cruz-Gonzales, A. Agabi, Leonardo J. Sanchez, Aziz Ziad, L. A. Martínez, J M Echevarría, Leonel Gutierrez, D. X. Cruz, Salvador Cuevas, Federico Martin Ibanez, F. Garfias, Raul M. Michel, Sonia González, Marc Sarazin, Elena Masciadri, Valeri V. Voitsekhovich, Beatriz Sánchez, Esperanza Carrasco, David Hiriart, M. Azouit, François Martin
Publikováno v:
SPIE Proceedings.
The Observatorio Astronomico Nacional at San Pedro Martir is situated on the summit of the San Pedro Martir Sierra in the Baja California peninsula of Mexico, at 2800m above sea level. For as long as three decades, a number of groups and individuals
Publikováno v:
SPIE Proceedings.
The applicability of the curvature method for co-phasing of segmented mirrors is investigated by means of simulations for the case of strongly defocused images. The simulations are performed for both the monochromatic and the white light as well. A s
Publikováno v:
SPIE Proceedings.
We demonstrate that the curvature equation can be modified using some properties of Distributions theory for segmented mirror techniques. It is shown that, additionally to the individual segment aberrations, the modified equation contains the informa
Publikováno v:
SPIE Proceedings.
The efficiency of off-axis adaptive astronomical systems is estimated for four astronomical sites: Paranal (Chili), Roque de los Muchachos (Canary Islands), San Pedro Martir (Mexico) and Observatoire de Haute Provence (France). The efficiency of inte
Publikováno v:
SPIE Proceedings.
A detailed analysis of anisotropy in the point spread function (PSF) associated with off-axis adaptive astronomicalcorrection is presented. The results obtained are based on the experimental C profile which has been recentlymeasured at San Pedro Mart
Autor:
J. Elon Graves, Franck Marchis, F. Garfias, Jean Vernin, Francois Roddier, Valeri G. Orlov, Pablo Diaz Sotelo, L. A. Martínez, Claude Roddier, Valeri V. Voitsekhovich, Salvador Cuevas, O. Chapa, Remy Avila, Arturo I. Iriarte Valverde, Silvio J. Tinoco, Malcolm J. Northcott
Publikováno v:
SPIE Proceedings.
We describe different works conducing to the adaptive optics system for the TIM 6.5m telescope. We show turbulence profiles result at our San Pedro Martir Observatory in Baja using the Generalized SCIDAR. We can conclude that the turbulence condition
Publikováno v:
SPIE Proceedings.
The influence of the turbulence outer scale on the power spectrum (PS) of speckle interferograms and on the Strehl ratio obtained with low-order adaptive optics (AO) system is examined by numerical simulation. It is shown that the outer scale has a l
Publikováno v:
Applied Optics. 38:3985
A generalization of the method of random wave vectors [Appl. Opt. 36, 464 (1997)] that is suitable for a simulation of turbulence-induced anisoplanatic effects is proposed. A simulation of the cross-correlated phase fluctuations produced by two initi