Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6266e..55o&link_type=abstract
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray. Edited by Turner, Martin J. L.; Hasinger, Günther. Proceedi
Astronomy and Astrophysics
Astronomy
Scientific paper
A single Constellation-X Spectroscopy X-ray Telescope (SXT) mirror segment pair is being aligned in the Optical Alignment Pathfinder 2 (OAP2) platform using a combination of mechanical and optical techniques. Coarse positioning was provided through a contact probe, the alignment was refined in a collimated while-light facility used for the Suzaku (ASTRO-E2) satellite, and then finalized with a combination of a Centroid Detector Assembly (CDA) and an interferometer coupled to a novel conical null lens providing surface map imaging over 60% of the mirror surface at one time. Due to a variety of reasons, the positioning and figure of the mirror segment under examination can shift, and we test how reliably high quality alignment can be reproduced on any given day. Also, the mirror segment's deformation response to deliberate misalignments has been tested, providing a response matrix for these thin glass mirror segments.
Content David A.
Hadjimichael Theo
Jones William D.
Lehan John P.
Meagher Thomas
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