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Proceedings Paper

Improved E-ELT subsystem and component specifications, thanks to M1 test facility
Author(s): M. Dimmler; J. Marrero; S. Leveque; Pablo Barriga; B. Sedghi; N. Kornweibel
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Paper Abstract

During the last 2 years ESO has operated the “M1 Test Facility”, a test stand consisting of a representative section of the E-ELT primary mirror equipped with 4 complete prototype segment subunits including sensors, actuators and control system. The purpose of the test facility is twofold: it serves to study and get familiar with component and system aspects like calibration, alignment and handling procedures and suitable control strategies on real hardware long before the primary mirror (hereafter M1) components are commissioned. Secondly, and of major benefit to the project, it offered the possibility to evaluate component and subsystem performance and interface issues in a system context in such detail, that issues could be identified early enough to feed back into the subsystem and component specifications. This considerably reduces risk and cost of the production units and allows refocusing the project team on important issues for the follow-up of the production contracts. Experiences are presented in which areas the results of the M1 Test Facility particularly helped to improve subsystem specifications and areas, where additional tests were adopted independent of the main test facility. Presented are the key experiences of the M1 Test Facility which lead to improved specifications or identified the need for additional testing outside of the M1 Test Facility.

Paper Details

Date Published: 22 July 2014
PDF: 15 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91451K (22 July 2014); doi: 10.1117/12.2055142
Show Author Affiliations
M. Dimmler, Ctr. de Recherche Astrophysique de Lyon, CNRS, Observatoire de Lyon (Germany)
J. Marrero, European Southern Observatory (Germany)
S. Leveque, European Southern Observatory (Germany)
Pablo Barriga, European Southern Observatory (Germany)
B. Sedghi, European Southern Observatory (Germany)
N. Kornweibel, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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