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Calibration schemes in MCAO

Abstract 112

Submitted by Francois RIGAUT


F. Rigaut, A. Garcia, B. Neichel, M. Bec, M. Boccas


Gemini Observatory


The Gemini MCAO system, GeMS, has been in integration and test in the lab for over a year. We present the main highlights of the integration and tests of the system. Issues we encountered, how we solved it. We will focus on the following points:
- Registration
- WFS subaperture (quadcell) centroid gains
- tomographic NCPA
- synthetic matrices and why we use it
- dependance over zenith angle
- flexures calibrations
- extrapolator issues
- temporal performance

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