Title :
Co-phasing segmented surfaces using the geometric sensor
Author :
Fernandez-Valdivia, J.J. ; Luke, Jonas P. ; Rosa, Felipe ; Rodriguez-Ramos, Jose M.
Author_Institution :
Dept. of Fundamental & Appl. Phys., Electron. & Syst., Univ. of La Laguna, La Laguna, Spain
Abstract :
This paper presents a method to co-phase segmented mirror. For this purpose, we use the geometric sensor, thus only two defocused images are acquired. The van Dam and Lane algorithm [1] is applied to obtain the tip-tilt in every segment, and a new method is used to restore the original local piston. Furthermore, by using specialized hardware the computations can be performed in real time, within the stability time of the atmosphere.
Keywords :
geometrical optics; mirrors; optical focusing; optical sensors; Lane algorithm; co-phase segmented mirror; co-phasing segmented surfaces; defocused images; geometric sensor; van Dam algorithm; Geometrical optics; Image restoration; Image segmentation; Mirrors; Optical surface waves; Pistons; Telescopes; Co-phasing; Geometric sensor; Local piston; Local tip-tilt; Segmented mirros; Wavefront sensor;
Conference_Titel :
Information Optics (WIO), 2013 12th Workshop on
Conference_Location :
Puerto de la Cruz
DOI :
10.1109/WIO.2013.6601268
