Alignment and test of a Constellation-X SXT mirror segment pair

Scott M. Owens; Thomas Meagher; Theo Hadjimichael; John P. Lehan; David A. Content; Timo Saha; William W. Zhang; Rob Petre; Paul Reid; William D. Jones; Stephen O'Dell

doi:10.1117/12.672663

20 June 2006 Alignment and test of a Constellation-X SXT mirror segment pair

Scott M. Owens, Thomas Meagher, Theo Hadjimichael, John P. Lehan, David A. Content, Timo Saha, William W. Zhang, Rob Petre, Paul Reid, William D. Jones, Stephen O'Dell

Author Affiliations +

Proceedings Volume 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray; 62661W (2006) https://doi.org/10.1117/12.672663
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

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.

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Scott M. Owens, Thomas Meagher, Theo Hadjimichael, John P. Lehan, David A. Content, Timo Saha, William W. Zhang, Rob Petre, Paul Reid, William D. Jones, and Stephen O'Dell "Alignment and test of a Constellation-X SXT mirror segment pair", Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661W (20 June 2006); https://doi.org/10.1117/12.672663

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