@inproceedings{5e38c147751f4eb99735caf5b3553032,
title = "SCOTS: A reverse Hartmann test with high dynamic range for Giant Magellan Telescope primary mirror segments",
abstract = "A software configurable optical test system (SCOTS) based on fringe reflection was implemented for measuring the primary mirror segments of the Giant Magellan Telescope (GMT). The system uses modulated fringe patterns on an LCD monitor as the source, and captures data with a CCD camera and calibrated imaging optics. The large dynamic range of SCOTS provides good measurement of regions with large slopes that cannot be captured reliably with interferometry. So the principal value of the SCOTS test for GMT is to provide accurate measurements that extend clear to the edge of the glass, even while the figure is in a rough state of figure, where the slopes are still high. Accurate calibration of the geometry and the mapping also enable the SCOTS test to achieve accuracy that is comparable measurement accuracy to the interferometric null test for the small- and middle- spatial scale errors in the GMT mirror.",
keywords = "Deflectometry, Fringe reflection, Hartmann test, Optical metrology, Optical testing",
author = "Peng Su and Shanshan Wang and Manal Khreishi and Yuhao Wang and Tianquan Su and Ping Zhou and Parks, {Robert E.} and Kevin Law and Mario Rascon and Tom Zobrist and Hubert Martin and Burge, {James H.}",
year = "2012",
doi = "10.1117/12.926719",
language = "English",
isbn = "9780819491510",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II",
note = "Modern Technologies in Space- and Ground-Based Telescopes and Instrumentation II ; Conference date: 01-07-2012 Through 06-07-2012",
}
