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15 July 2008 Preliminary design of the post focal relay of the MCAO module for the E-ELT
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Abstract
MAORY, the multi-conjugate adaptive optics module for the E-ELT, is supposed to be placed in one of the two Nasmyth platforms of the telescope, re-imaging the focal plane with a diffraction limited image quality. The requested operating wavelength is from 0.6 to 2.4μm with a high throughput. The module will include a natural guide stars wave front sensor (NGS WFS) and a laser guide stars WFS (LGS WFS) and will feed at least two scientific instruments with a corrected field of view up to 2 arcmin, providing a mechanical de-rotation for the light instruments attached (< 4tons). We present below a preliminary optical design of the post focal relay taking count of the required performance. A particular attention is paid to the critical aspects such as the pupil de-rotation, the light splitting between the WFSs and the scientific channel and the deformable mirrors (DMs) optical parameters and dimensioning.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Matteo Lombini, Emiliano Diolaiti, Italo Foppiani, Laura Schreiber, Enrico Marchetti, and Bernard Delabre "Preliminary design of the post focal relay of the MCAO module for the E-ELT", Proc. SPIE 7015, Adaptive Optics Systems, 70155U (15 July 2008); doi: 10.1117/12.788921; https://doi.org/10.1117/12.788921
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