Optimal pupil mask geometries for large AO-compensated telescopes

David W. Tyler; Olivier Lai; H. Muralimanohar

doi:10.1117/12.459693

7 February 2003 Optimal pupil mask geometries for large, AO-compensated telescopes

David W. Tyler, Olivier Lai, H. Muralimanohar

Proceedings Volume 4839, Adaptive Optical System Technologies II; (2003) https://doi.org/10.1117/12.459693
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We consider the use of pupil masks with AO-compensated telescopes, calculating fringe energy SNR for a variety of object brightness values and for different degrees of AO compensation. We propose a way to specify the optimum subaperture diameter for an N-subaperture mask and argue for the use of masks, in combination with full-aperture data, to increase SNR at the highest spatial frequencies the telescope can sample. Use of full-aperture data in combination with high-SNR masked-aperture data can yield imagery with higher spatial resolution than full-aperture data alone.

Citation Download Citation

David W. Tyler, Olivier Lai, and H. Muralimanohar "Optimal pupil mask geometries for large, AO-compensated telescopes", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); https://doi.org/10.1117/12.459693

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