Wavefront sensing for solar adaptive optics currently requires the use of extended-field Shack-Hartmann wavefront sensors. Such wavefront sensors suffer from a reduced sensitivity to high altitude turbulence due effects of measuring wavefront gradients using the relative motion within the extended-field. We discuss the performance of centroiding techniques in a correlation Shack-Hartmann wavefront sensor and the insensitivity to high altitude turbulence and propose a method for reducing the field of view required to effectively measure the wavefront gradient in order to increase the sensors sensitivity to high altitude turbulence
The ability to measure atmospheric turbulence characteristics such as Fried\u27s coherence diameter,...
The wavefront sensor of Hartmann type consists of two parts: the optical and algorithmic. The parame...
A Shack-Hartmann wavefront sensor processes images formed by an array of lenses to determine the loc...
One major disadvantage to ground based observations is the distortion of light as it enters the Eart...
International audienceThe ultimate performance of adaptive optics is limited by the quality of the w...
The European Solar Telescope is a 4-m planned facility designed to have high spatial resolution capa...
Standard adaptive optics systems measure the aberrations in the wavefronts of a beacon guide star ca...
Ground based telescopes suffer from degraded resolution due to aberrations induced by the atmosphere...
The National Solar Observatory at Sacramento Peak is developing adaptive optics (AO) for solar astro...
Atmospheric effects limit the performance of any electro-optical (EO) system. Tasks such as laser co...
Atmospheric turbulence limits the resolving power of astronomical telescopes by distorting the path...
International audienceThe estimation of atmospheric turbulence parameters is of relevance for the fo...
International audienceShack-Hartmann wavefront sensing relies on accurate spot centre measurement. S...
Several studies on different adaptive optics concepts are presented in the article. Each one of the ...
Shack–Hartmann wavefront sensors for both solar and laser guide star adaptive optics (with elongated...
The ability to measure atmospheric turbulence characteristics such as Fried\u27s coherence diameter,...
The wavefront sensor of Hartmann type consists of two parts: the optical and algorithmic. The parame...
A Shack-Hartmann wavefront sensor processes images formed by an array of lenses to determine the loc...
One major disadvantage to ground based observations is the distortion of light as it enters the Eart...
International audienceThe ultimate performance of adaptive optics is limited by the quality of the w...
The European Solar Telescope is a 4-m planned facility designed to have high spatial resolution capa...
Standard adaptive optics systems measure the aberrations in the wavefronts of a beacon guide star ca...
Ground based telescopes suffer from degraded resolution due to aberrations induced by the atmosphere...
The National Solar Observatory at Sacramento Peak is developing adaptive optics (AO) for solar astro...
Atmospheric effects limit the performance of any electro-optical (EO) system. Tasks such as laser co...
Atmospheric turbulence limits the resolving power of astronomical telescopes by distorting the path...
International audienceThe estimation of atmospheric turbulence parameters is of relevance for the fo...
International audienceShack-Hartmann wavefront sensing relies on accurate spot centre measurement. S...
Several studies on different adaptive optics concepts are presented in the article. Each one of the ...
Shack–Hartmann wavefront sensors for both solar and laser guide star adaptive optics (with elongated...
The ability to measure atmospheric turbulence characteristics such as Fried\u27s coherence diameter,...
The wavefront sensor of Hartmann type consists of two parts: the optical and algorithmic. The parame...
A Shack-Hartmann wavefront sensor processes images formed by an array of lenses to determine the loc...