Seeing timescales for large-aperture optical/infrared interferometers from simulations

Robert N. Tubbs

doi:10.1117/12.550320

20 October 2004 Seeing timescales for large-aperture optical/infrared interferometers from simulations

Robert N. Tubbs

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.550320
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

Numerical simulations of interferometers with spatial filters and large apertures are presented. These simulations are particularly aimed at measuring the fringe (or OPD) motion caused by atmospherically induced wavefront corrugations (high order Zernike modes) across the telescope apertures. This component of the fringe motion results from the coupling in a spatial filter of high-order Zernike modes to the fringe motion. The Piston Mode component is found to be an inadequate approximation to the OPD in an interferometer with large apertures, spatial filters and tip-tilt correction. The fringe motion at high temporal frequencies is dominated by the effects of wavefront corrugations across the telescope apertures.

Citation Download Citation

Robert N. Tubbs "Seeing timescales for large-aperture optical/infrared interferometers from simulations", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.550320

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