13 September 2012 Specifications and design of the E-ELT M4 adaptive unit
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Proceedings Volume 8447, Adaptive Optics Systems III; 844761 (2012); doi: 10.1117/12.925133
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands
Abstract
A 40 meters class telescope does require adaptive optics to provide few milli arcseconds resolution images. In the current design of the E-ELT, M4 provides adaptive correction and has also to cancel part of telescope wind shaking and static aberrations. 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 discuss what the challenges are in term of stability and performance of the associated key technologies. We will finally describe the current baseline design and the required schedule and work plan to adequately manufacture the E-ELT quartenary mirror.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Elise Vernet, Marc Cayrel, Norbert Hubin, Michael Mueller, Roberto Biasi, Daniele Gallieni, Matteo Tintori, "Specifications and design of the E-ELT M4 adaptive unit", Proc. SPIE 8447, Adaptive Optics Systems III, 844761 (13 September 2012); doi: 10.1117/12.925133; https://doi.org/10.1117/12.925133
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KEYWORDS
Mirrors

Telescopes

Actuators

Wavefronts

Manufacturing

Sensors

Adaptive optics

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