Segmented aperture system wavefront error sensing and correction experiments at BATC

Paul D. Atcheson; Timothy C. Towell; Phillip C. Quigley

doi:10.1117/12.367619

29 October 1999 Segmented aperture system wavefront error sensing and correction experiments at BATC

Paul D. Atcheson, Timothy C. Towell, Phillip C. Quigley

Proceedings Volume 3785, Advanced Telescope Design, Fabrication, and Control; (1999) https://doi.org/10.1117/12.367619
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

BATC has developed a laboratory testbed specifically designed to evaluate the relative merits of wavefront sensing and correction algorithms for active optical systems. The testbed includes a point source, a segmented aperture input with four independently alignable rigid segments, and a sensor assembly that simultaneously provides numerous wavefront and image sensing capabilities. This Wavefront Control Testbed has been used to conduct a series of experiments designed to compare and quantify various techniques for measuring and removing the wavefront errors in a segmented aperture optical system. The results of these experiments are used to support the top-level definition of the wavefront control system that can be used for ensuring the optical performance of large space-based observatories such as the Next Generation Space Telescope. A short description of the experimental parameters and results is presented, along with the expected future use of the testbed.

Citation Download Citation

Paul D. Atcheson, Timothy C. Towell, and Phillip C. Quigley "Segmented aperture system wavefront error sensing and correction experiments at BATC", Proc. SPIE 3785, Advanced Telescope Design, Fabrication, and Control, (29 October 1999); https://doi.org/10.1117/12.367619

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