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PSD Determination Using a Simultaneous-Phase Acquisition Interferometer for the Constellation-X Spectroscopy X-ray Telescope (SXT) Mirror Program

J. P. Lehan, T. T. Saha, and W. W. Zhang

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Abstract

We investigated the use of a simultaneous-phase acquisition (SPA) interferometer (a 4D FizCam™ 1500) for determining the PSD of the extremely-high aspect ratio (500:1) glass mirrors for the Constellation-X SXT telescope. We found that the results obtained are strongly influenced by the methodology employed while collecting the data and outline a best method for this type of measurement.

© 2006 Optical Society of America

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