|Number of page(s)||6|
|Published online||24 February 2010|
Deformable mirror fitting error by correcting the segmented wavefronts
European Organization for Astronomical Research in the Southern Hemisphere (ESO)
Karl Schwarzschildstr. 2, D-85748 Garching b. Muenchen, Germany
a e-mail: email@example.com
The ob jective of the present study is to estimate the ability of conventional adaptive optics (AO) to correct for a wavefront created by static errors randomly distributed over the population of a multi-segmented primary mirror for an extremely large telescope (ELT). Among all errors the deformable mirror fitting error is the factor which contributes the most to the performance degradation. We quantify this error through a ratio between two root mean square (RMS) values of the phase before and after the correction. We compare the results of several AO models: from the high-pass hard edge filter to the optical waves end-to-end modeling.
© Owned by the authors, published by EDP Sciences, 2010