Specifications and design of the E-ELT M4 adaptive unit

摘要

A 40 meters class telescope does require adaptive optics to provide few milli arcseconds resolution images. In the currentdesign of the E-ELT, M4 provides adaptive correction and has also to cancel part of telescope wind shaking and staticaberrations. The 2.4 meters adaptive mirror will provide as well Nasmyth focus selection.We will present the main design drivers and the main specifications quaternary mirror will have to meet. We will discusswhat the challenges are in term of stability and performance of the associated key technologies. We will finally describethe current baseline design and the required schedule and work plan to adequately manufacture the E-ELT quartenarymirror.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.