Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry

Not Accessible

Your library or personal account may give you access

Abstract

We use closed-loop deformable mirror telemetry from Altair and Keck adaptive optics (AO) to determine whether atmospheric turbulence follows the frozen flow hypothesis. Using telemetry from AO systems, our algorithms (based on the predictive Fourier control framework) detect frozen flow >94% of the time. Usually one to three layers are detected. Between 20% and 40% of the total controllable phase power is due to frozen flow. Velocity vector RMS variability is less than 0.5ms (per axis) on 10-s intervals, indicating that the atmosphere is stable enough for predictive control to measure and adapt to prevailing atmospheric conditions before they change.

© 2009 Optical Society of America

Full Article  |  PDF Article
More Like This
Fourier transform wavefront control with adaptive prediction of the atmosphere

Lisa A. Poyneer, Bruce A. Macintosh, and Jean-Pierre Véran
J. Opt. Soc. Am. A 24(9) 2645-2660 (2007)

Kalman filtering to suppress spurious signals in adaptive optics control

Lisa A. Poyneer and Jean-Pierre Véran
J. Opt. Soc. Am. A 27(11) A223-A234 (2010)

Laboratory demonstration of the prediction of wind-blown turbulence by adaptive optics at 8  kHz with use of LQG control

Lisa A. Poyneer, S. Mark Ammons, Mike K. Kim, Brian Bauman, Jesse Terrel-Perez, Aaron J. Lemmer, and Jayke Nguyen
Appl. Opt. 62(8) 1871-1885 (2023)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved