Sky coverage and tip/tilt error analysis for TMT

Richard M. Clare; Brent L. Ellerbroek; Jean-Pierre Véran; Glen Herriot; David Andersen

doi:10.1117/12.669680

28 June 2006 Sky coverage and tip/tilt error analysis for TMT

Richard M. Clare, Brent L. Ellerbroek, Jean-Pierre Véran, Glen Herriot, David Andersen

Proceedings Volume 6272, Advances in Adaptive Optics II; 627232 (2006) https://doi.org/10.1117/12.669680
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

A Monte Carlo sky coverage model for laser guide star adaptive optics systems is presented. This model provides fast Monte Carlo simulations of the tip/tilt (TT) wavefront error calculated with minimum variance estimators over natural guide star constellations generated from star models. With this simulation code we are able to generate a TT error budget for the Thirty Metre Telescope (TMT) facility Narrow Field Infra-Red Adaptive Optics System (NFIRAOS), and perform several design trade studies. With the current NFIRAOS design, the median TT error at the galactic pole with median seeing is calculated to be 65 nm or 1.8 mas.

Citation Download Citation

Richard M. Clare, Brent L. Ellerbroek, Jean-Pierre Véran, Glen Herriot, and David Andersen "Sky coverage and tip/tilt error analysis for TMT", Proc. SPIE 6272, Advances in Adaptive Optics II, 627232 (28 June 2006); https://doi.org/10.1117/12.669680

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