Physics – Optics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..974h&link_type=abstract
IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 2 (A91-23201 08-89
Physics
Optics
Electro-Optics, Interferometry, Misalignment, Phase Control, Pistons, Telescopes, Actuators, Feedback Control, Mirrors, Servocontrol
Scientific paper
A method of phasing segmented-mirror systems using a new form of white-light radial-shear interferometer is presented. The device was used in a laboratory proof-of-concept demonstration to phase two elements of an annularly segmented mirror. This co-phasing was achieved both manually and with low-bandwidth closed-loop servo control using a new and perhaps simpler modulation technique than that proposed previously. The configuration used in the demonstration is described, together with some initial results.
Bernotas L. A.
Horton Richard F.
Huber E. E.
Roberts A. V.
Yee G. B. L.
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