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Last modified: 13.04.2006

THE ELT DESIGN STUDY

  Task 04000  

Wavefront control Coordination of tasks No 04200 to 04800

 Work packages  

WP nr. Descriptive title Short description and specific objectives of the task
04200 Metrology Objectives: feasibility and performance of a metrology system for coarse alignment of the optics. Ditto for low cost position sensors for the phasing of segments.
Tasks: development/testing of low-cost alignment systems and position sensors for segment phasing. Feasibility study for serial production and integration of thousands of units.
04300 Position actuators Objective: feasibility of nm-accuracy, cost-effective segments position actuators.
Tasks: development and testing of actuators for segment positioning (Wind Evaluation Breadboard #04800); feasibility study for cost-effective serial production & integration of thousands of units
04400 Characterisation of image properties Objectives: quantify crucial system requirements in relation to science goals.
Tasks: determination and specification of most suitable parameters for the characterization of science image contrast
04500 High contrast imaging Objectives: identify and quantify extreme contrast imaging techniques (mainly for exo-planet imaging and spectroscopy).
Tasks: review, development of high contrast imaging methods. Performance evaluation through simulations; implications on system / subsystems specifications
04600 Active Phasing Experiment (APE) Objectives: testing of control strategies and techniques.
Tasks: design, construction, laboratory and on-sky testing of a technical instrument emulating active wavefront control functions, including three distinct on-sky phasing techniques
04800 Wind Evaluation Breadboard (WEB) Objectives: quantify ability to cope with high frequency wind disturbances.
Tasks: Construction and on-site testing of the wind effect at ORM, Canary Islands of a bench emulating 7 segments, including support systems and support structures

Workpackage managers
 
WP nr. Manager Affiliation
04000 L. Noethe
N. Devaney (deputy)
ESO
IAC
04200 L. Noethe
S. Leveque (deputy)
K. Dohlen (deputy)
ESO
ESO
OAMP
04300 E. Brunetto
M. Dimmler (deputy)
ESO
ESO
04400 N. Yaitskova
M. Le Louarn (deputy)
ESO
ESO
04500 M. Kasper
N. Yaitskova (deputy)
ESO
ESO
04600 F. Derie ESO
04800 E. Brunetto ESO
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