The woofer-tweeter experiment

R. Conan; P. Hampton; C. Bradley; O. Keskin

doi:10.1117/12.670720

28 June 2006 The woofer-tweeter experiment

R. Conan, P. Hampton, C. Bradley, O. Keskin

Proceedings Volume 6272, Advances in Adaptive Optics II; 62721V (2006) https://doi.org/10.1117/12.670720
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

The Woofer-Tweeter experiment started in the Adaptive Optics Laboratory of the University of Victoria in February 2005 has recently achieved completion. The goal of this experiment is to validate the woofer-tweeter AO concept i.e. instead to have a single deformable mirror conjugated at the ground, two DMs conjugated at the ground are used to achieve both the necessary stroke and actuators density required for a single DM for an ELT. Recently, the loop has been closed on the turbulence with a loop rate of 100Hz. Two closed-loop controllers have been tested so far: a global integrator and a tweeter off-loading integrator. This paper describes the UVic Woofer-Tweeter bench layout and components and the Woofer-Tweeter simulation tool used to both model and control the experiment. A glimpse on the very first results from the closed-loop operations is also given.

Citation Download Citation

R. Conan, P. Hampton, C. Bradley, and O. Keskin "The woofer-tweeter experiment", Proc. SPIE 6272, Advances in Adaptive Optics II, 62721V (28 June 2006); https://doi.org/10.1117/12.670720

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