Numerical simulations of the LBT adaptive secondary mirror

Details Numerical simulations of the LBT adaptive secondary mirror Numerical simulations of the LBT adaptive secondary mirror

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4007..516d&link_type=abstract

Proc. SPIE Vol. 4007, p. 516-523, Adaptive Optical Systems Technology, Peter L. Wizinowich; Ed.

Physics

Optics

Scientific paper

In this paper we describe the design of the deformable mirror of the Large Binocular Telescope adaptive secondary unit. Starting from the optical design, a numerical model of the ultra-thin, aspherical glass shell, accommodating the 918 magnets on the selected actuator geometry, has been run. As a result, we can evaluate the response of this crucial component of the telescope optics with great accuracy. The DM is analyzed from the mechanical standpoint -- gravity deformations, wavefront residue, residue of low-order Zernike aberrations, corrections of magnetic interactions -- in order to compute the optical performances in the most demanding operational circumstances.

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