11 September 1998 Design of the first-generation wavefront sensor and actuator geometry for the 6.5-m MMT adaptive optical system
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Abstract
A description is given for the geometry of the first generation adaptive-optical (AO) system being developed for the 6.5m single-mirror telescope that will replace the Multiple Mirror Telescope on Mt. Hopkins. The AO system consists of an adaptive secondary mirror with 330-actuators and a wave front senor composed of a 13 by 13 square subaperture array. The deformable mirror actuator vibrational modes were determined from a finite element model of the adaptive-secondary mirror. Numerical simulations in based on the finite element results were carried out to determine the expected performance of the system. Two reconstruction algorithms were compared - a least squares reconstructor and a modal equalization technique developed for this AO geometry. Strehl ratios are reported for the two algorithms for various guide star magnitudes and number of corrected wave front modes.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Troy A. Rhoadarmer, Troy A. Rhoadarmer, Patrick C. McGuire, Patrick C. McGuire, Michael Lloyd-Hart, Michael Lloyd-Hart, James Roger P. Angel, James Roger P. Angel, Brian Cuerden, Brian Cuerden, Bruce C. Fitz-Patrick, Bruce C. Fitz-Patrick, David G. Sandler, David G. Sandler, "Design of the first-generation wavefront sensor and actuator geometry for the 6.5-m MMT adaptive optical system", Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321715; https://doi.org/10.1117/12.321715
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