DIRECT SOLVE IMAGE BASED WAVE-FRONT SENSING
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United States of America Patent
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app pub date -
Jun 11, 2009
filing date -
Aug 26, 2008
priority date (Note) -
Abandoned
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Abstract
A method of aligning an array of mirrors and computer program product therefor. The method may be used to align mirrors in a sparse aperture telescope system, e.g., a spaced based imaging interferometer. An image projected onto mirrors in an array of mirrors is reflected onto a sensor, where a point spread function (PSF) is collected from a pair of mirrors. A spatial image is extracted from PSF sidebands and a difference (e.g., piston difference) is determined for the pair of mirrors from the spatial image. Tip and tilt are determined for the pair of mirrors from spatial image characteristics.
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