Adaptive optics image compensation experiment for star objects

Details Adaptive optics image compensation experiment for star objects Adaptive optics image compensation experiment for star objects

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1920..381j&link_type=abstract

Proc. SPIE Vol. 1920, p. 381-391, Active and Adaptive Optical Components and Systems II, Mark A. Ealey; Ed.

Physics

Optics

Scientific paper

We have developed an adaptive optics image compensation system. It consists of a tip-tilt mirror, a 21 actuator deformable mirror, a photon counting shearing interferometer, a digital wavefront processor and an ICCD array camera. In this system, both the wavefront sensing and the correction are performed at visible wavelengths. The servo bandwidth of the system in open-loop is 65 Hz at 0 dB point. This system has been successfully tested on a telescope of Yunnan Observatory in China. The tested aperture is 375 nm. The system works satisfactory with stars brighter than m(subscript v) equals 3(superscript m).78. The minimum photocount of wavefront sensing is 95 per subaperture per integrated time. The experiment results is presented, which demonstrate the considerable gain in resolution either for single stars or for binary stars.

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