Alignment of the elements of a segmented mirror using different combinations of wavefront sensors: numerical simulations

Jose M. Rodriguez-Ramos; Jesus Jimenez Fuensalida

doi:10.1117/12.279054

17 October 1997 Alignment of the elements of a segmented mirror using different combinations of wavefront sensors: numerical simulations

Jose M. Rodriguez-Ramos, Jesus Jimenez Fuensalida

Author Affiliations +

Proceedings Volume 3126, Adaptive Optics and Applications; (1997) https://doi.org/10.1117/12.279054
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Segments alignment is one of the fundamental factors affecting the shape of the PSF of an optical segmented surface (composed by mirrors or lenses). Tilt and piston of each segment must be very well and uniformly adjusted in relation with the rest of segments. The Shack-Hartmann sensor is very efficient in detecting the local wavefront tilt, and the Curvature sensor is sensitive enough in order to detect local piston errors in the segmented mirrors (1). We show, with numerical simulations, how suches two sensors work in the presence of tilt and piston aberrations. Then, we propose a combine sensor that simultaneously senses the wavefront by Shack-Hartmann and Curvature techniques. An iterative process should improve the measures.

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Jose M. Rodriguez-Ramos and Jesus Jimenez Fuensalida "Alignment of the elements of a segmented mirror using different combinations of wavefront sensors: numerical simulations", Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); https://doi.org/10.1117/12.279054

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