Visible-wavelength diffraction-limited imaging using low-order adaptive optics

David F. Buscher; Andrew Peter Doel; Christopher A. Haniff; Richard W. Wilson

doi:10.1117/12.217765

25 August 1995 Visible-wavelength diffraction-limited imaging using low-order adaptive optics

David F. Buscher, Andrew Peter Doel, Christopher A. Haniff, Richard W. Wilson

Proceedings Volume 2534, Adaptive Optical Systems and Applications; (1995) https://doi.org/10.1117/12.217765
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

We explore the possibilities and limitations of an adaptively corrected dilute-aperture optical telescope. In such a system a non-redundant pupil geometry is coupled with low degree-of- freedom adaptive optics (AO) to achieve a diffraction-limited imaging capability with high fidelity. We show that such a configuration can operate successfully at optical wavelengths where the problems of point-spread-function (PSF) calibration place significant limitations on conventional adaptive optics. A key component of our system is a suite of interferometric wavefront sensors which guarantees that the system operates in a regime where sensitivity to fluctuations in the seeing is reduced. By operating with a sparse pupil, the total number of active components is minimized, as are difficulties associated with implementing the interferometric wavefront sensors. We plan to demonstrate such a system using the University of Durham ELECTRA AO system in the very near future.

Citation Download Citation

David F. Buscher, Andrew Peter Doel, Christopher A. Haniff, and Richard W. Wilson "Visible-wavelength diffraction-limited imaging using low-order adaptive optics", Proc. SPIE 2534, Adaptive Optical Systems and Applications, (25 August 1995); https://doi.org/10.1117/12.217765

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