Computer Science – Numerical Analysis
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..818..419j&link_type=abstract
IN: Current developments in optical engineering II; Proceedings of the Meeting, San Diego, CA, Aug. 18-21, 1987 (A89-10258 01-74
Computer Science
Numerical Analysis
Aberration, Alignment, Automatic Control, Mirrors, Numerical Analysis, Reflecting Telescopes, Error Analysis, Laser Outputs, Matrices (Mathematics), Optical Equipment, Simulation
Scientific paper
Numerical analysis and simulation of a technique for automatic alignment of a three-mirror off-axis telescope were carried out using a method of reverse optimization and end-to-end measurements. The techniques uses Hartmann measurements made at multiple field points and multiple focus planes. The reverse optimization method uses the Hartmann data as target values in a standard lens design program and damped least squares optimization to determine the state of misalignment of the system. Once the state of misalignment is determined, a single step correction of all misalignments is possible in principle. Results show that multiple measuring planes make possible a larger capture range, faster convergence, and larger measurement tolerances than does a single measurement plane.
Jeong Hwan Joo
Lawrence George N.
Nahm Kie B.
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