Progress on the Active Alignment System for the IXO Mirrors

Details Progress on the Active Alignment System for the IXO Mirrors Progress on the Active Alignment System for the IXO Mirrors

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.4016f&link_type=abstract

American Astronomical Society, HEAD meeting #11, #40.16; Bulletin of the American Astronomical Society, Vol. 41, p.723

Astronomy and Astrophysics

Astronomy

Scientific paper

The IXO soft x-ray telescope effort in the US is focused on a tightly nested, thin glass, segmented mirror design. Fabrication of the glass segments with the required surface accuracy is a fundamental challenge; perhaps more challenging will be the alignment of the 7000 secondary mirror segments with their corresponding primary mirrors, and co-alignment of the mirror pairs. We have developed a system to perform this alignment using a combination of a coordinate measuring machine (CMM) and a double-pass Hartmann test alignment system. We discuss the technique, its ability to correct low-order mirror errors, and results of a recent pair alignment including progress toward the required alignment accuracy of < 2 arcseconds.

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