Adaptive Optics; Fast Steering Mirror; Tip and Tilt; Vibrations in AO control; Adaptive optics systems; Astronomical instrument; Fast steering mirror; Laboratory demonstrations; Shack-Hartmann wavefront sensors; Structural vibrations; Tip-tilt compensation; Electronic, Optical and Magnetic Materials; Condensed Matter Physics; Computer Science Applications; Applied Mathematics; Electrical and Electronic Engineering
Abstract :
[en] Mechanical vibrations affect the performance in modern adaptive optics systems. These structural vibrations induce aberration mainly in tip-Tilt modes that reduce the accuracy of the astronomical instrument. Therefore, control actions need to be taken. With this purpose we present a laboratory demonstration of vibration rejection of tip-Tilt modes using closed-loop control, inducing vibration on the test bench via an eccentric motor with controllable frequency, in order to simulate the structural vibrations mentioned above. We measure the laser vibration and its tip-Tilt aberration using a camera and a Shack Hartmann Wave Front Sensor. The control action is carried out by a Fast Steering Mirror (FSM).
Disciplines :
Electrical & electronics engineering Space science, astronomy & astrophysics
Author, co-author :
Castro, Mario; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Escárate, Pedro; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Garcés, Javier; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Zúñiga Fernández, Sebastián Gaspar ; Université de Liège - ULiège > Astrobiology ; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Rojas, Diego; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Marchioni, José; AC3E, Departamento de Electronica, Universidad Tecnica Federico Santa Mara, Valparaso, Chile
Guesalaga, Andrés; Ponticia Universidad Catolica de Chile, Santiago, Chile
Language :
English
Title :
Closed-loop control for tip-Tilt compensation on systems under vibration
Publication date :
2016
Event name :
Adaptive Optics Systems V
Event place :
Edinburgh, Gbr
Event date :
26-06-2016 => 01-07-2016
Audience :
International
Main work title :
Adaptive Optics Systems V
Editor :
Marchetti, Enrico
Publisher :
SPIE
ISBN/EAN :
978-1-5106-0197-0
Peer reviewed :
Editorial reviewed
Funders :
The Society of Photo-Optical Instrumentation Engineers (SPIE)
Caroline Kulcsar et al, Vibrations in AO Control: A Short Analysis of On-Sky Data Around the World. , Proc. SPIE 8447, Adaptive Optics Systems III, 2012.
W. Brandner et al, NAOS+CONICA at YEPUN: First VLT Adaptive Optics System Sees First Light., El Mensajero, No 107, 2002.
Y. Clenet et al, NAOS Performances: Impact of the Telescope Vibrations and Possible Origins., SF2A-2004: Semaine de l'Astrophysique Francaise, 2004.
Michael Hess et al, Strategy for Identifying and Mitigating Facility Vibrations to Improve Optical Perfor-mance at the W.M. Keck Observatory., Proceedings of SPIE Vol. 4837, 2003.
Andres Guesalaga et al, Design of Frequency-Based Controllers for Vibration Mitigation at the Gemini-South Telescope., Proc. SPIE 8447, Adaptive Optics Systems III, 844711, 2012.
Andres Guesalaga et al, Comparison of Vibration Mitigation Controllers for Adaptive Optics Sys-Tems., Applied Optics Vol. 51, No. 19, 2012.
Andres Guesalaga et al, Mitigation of Vibrations in Adaptive Optics by Minimization of Closed-Loop Resid-uals., Optics Express, Vol. 21, Issue 9, pp. 10676-10696, 2013.
Newport, FSM-300 Fast Steering Mirror and FSM-CD300B Controller/Driver., Newport Users Manual.
Edmund Optics, EO-0413C 1=300 CMOS Color USB Lite Edition Camera., Edmund Optics Technical In-formation.
Measurement Computing, USB-1208HS Series., Measurement Computing Series Data.
