Optical calibration and testing of the E-ELT M4 adaptive mirror

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DOIResolve DOI: http://doi.org/10.1117/12.926008
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TypeArticle
Proceedings titleAdaptive Optics Systems III
Series titleProceedings of SPIE; Volume 8447
ConferenceAdaptive Optics Systems III, July 1-6, 2012, Amsterdam, Netherlands
ISSN0277-786X
ISBN9780819491480
Article number84473O
SubjectInterferometry, CGH, stitching, piston sensor, ELTs
AbstractInnovative optical interferometry test setups and control software techniques have been proposed for the E-ELT M4 adaptive optics mirror. The system is composed of three sub-systems: a CGH-based optical test tower, delivering a 1.5-m collimated beam, for fast simultaneous acquisition of large areas; a stitching interferometer, to calibrate at higher spatial frequencies, on smaller areas; and an optical piston sensor to remove differential piston and tilt between adjacent mirror segments.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270280
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Record identifier7887c254-b5c0-4fc9-9052-72eff4bdba09
Record created2014-01-20
Record modified2016-05-09
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