Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/3631
Título: | Modulation effect of the atmosphere in a pyramid wave-front sensor |
Autor(es): | Costa, Joana B. |
Palavras-chave: | Atmospheric and ocean optics Atmospheric and ocean optics Adaptive optics Wave-front sensing |
Data: | 2005 |
Editora: | Optical Society of America |
Revista: | Applied Optics |
Citação: | "Applied Optics". ISSN 0003-6935. 44:1 (2005) 60-66. |
Resumo(s): | The pyramid wave-front sensor in its original form works with a mechanical modulation that adapts the linear range of the sensor to seeing and sensing conditions. For adaptive optics systems working in an astronomical context, the way in which the aberrations produced by the atmospheric turbulence, which are not seen by the sensor owing to its limited temporal bandwidth, act as modulators is shown. These aberrations have the same effect of increasing the linear range and localizing the measurement as does mechanical modulation. The effect of residual wave-front aberrations is estimated for some example conditions of telescope diameter, system bandwidth, wind velocity, and Fried parameter. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/3631 |
ISSN: | 0003-6935 1539-4522 |
Versão da editora: | http://ao.osa.org/issue.cfm |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - OCV - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
pyramidJoana.pdf | Documento principal | 270,5 kB | Adobe PDF | Ver/Abrir |