Calculating diffraction-limited point spread functions for large segmented telescopes

Stephen S. Eikenberry; Brienne D. Shkedi; Terry L. Herter

doi:10.1117/12.457908

4 February 2003 Calculating diffraction-limited point spread functions for large segmented telescopes

Stephen S. Eikenberry, Brienne D. Shkedi, Terry L. Herter

Proceedings Volume 4837, Large Ground-based Telescopes; (2003) https://doi.org/10.1117/12.457908
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We present techniques for Fourier analysis of the diffraction-limited optical performance of large-aperture astronomical telescopes. We use combinations of Fast Fourier Transform, Discrete Fourier Transform, and Fourier interpolation algorithms as well as the symmetry properties of the segmented mirrors to achieve full calculation of the diffraction pattern in a computationally-efficient manner. We discuss the implementation and results of these techniques in the context of a 15-meter segmented-mirror telescope design for the Large Atacama Telescope.

Citation Download Citation

Stephen S. Eikenberry, Brienne D. Shkedi, and Terry L. Herter "Calculating diffraction-limited point spread functions for large segmented telescopes", Proc. SPIE 4837, Large Ground-based Telescopes, (4 February 2003); https://doi.org/10.1117/12.457908

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