Physics – Optics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490.1514d&link_type=abstract
Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI
Physics
Optics
3
Scientific paper
We present here results using two novel adaptive optic elements, an electro-static membrane mirror built by OKO Technologies, and a dual frequency multi-segment nematic liquid crystal built by Meadowlark Optics. These devices have the advantage of low cost, low power consumption, and compact size. The total cost for these adaptive optics elements is hundreds of dollars per actuator as compared to a cost of thousands of dollars per actuator for conventional adaptive optics. Field experiments were performed on the Air Force Research Laboratory 3.67 meter telescope on Maui, Hawaii, with the aperture stopped down to 1.15 meters. It is believed that this is the first ever experimental demonstration of these two devices for adaptive correction of images of satellites. Recently, the control electronics for the liquid crystal device were rebuilt and we were able to increase the closed loop bandwidth from 40 to 80 Hz.
Browne Stephen
Dayton David C.
Gonglewski John
Restaino Sergio R.
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