Design of an Adaptive Secondary Mirror: A Global Approach

Details Design of an Adaptive Secondary Mirror: A Global Approach Design of an Adaptive Secondary Mirror: A Global Approach

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apopt..37.4656b&link_type=abstract

Applied Optics LP, vol. 37, Issue 21, pp.4656-4662

Physics

Optics

1

Scientific paper

We present the mechanical and actuator design of an adaptive secondary mirror that matches the optical requirements of the active and adaptive corrections. Conceived for the particular implementation for the 6.5-m conversion of the multiple-mirror telescope, with small variations of the input parameters this study is suitable for applications for telescopes of the same class. We found that a three-layer structure, i.e., a thin deformable shell, a thick reference plate, and a third plate that acts as actuator support and heat sink, is able to provide the required mechanical stability and actuator density. We also found that a simple electromagnetic actuator can be used. This actuator, when optimized, will dissipate a typical power of a few tenths of watts.

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