UnISIS: a laser-guided adaptive optics system for the Mt. Wilson 2.5-m telescope

Details UnISIS: a laser-guided adaptive optics system for the Mt. Wilson 2.5-m telescope UnISIS: a laser-guided adaptive optics system for the Mt. Wilson 2.5-m telescope

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3353..282t&link_type=abstract

Proc. SPIE Vol. 3353, p. 282-289, Adaptive Optical System Technologies, Domenico Bonaccini; Robert K. Tyson; Eds.

Physics

Optics

7

Scientific paper

Final design details are given for UnISIS, the University of Illinois Seeing Improvement System. The principle components include a 50 Watt Excimer laser working at 351 nm which produces a pulsed Rayleigh laser guide star at 333 Hz and 18 km altitude, a 177-actuator deformable mirror, an atmospheric dispersion correction system, and a science camera configuration with both visual and near-IR cameras that can be used simultaneously. Two high-speed CCD cameras are used to feed dual quad C40 DSP-based reconstructor to close the feedback loop with the deformable mirror. The adaptive optics system is situated on a large optics table that rests above the old Coude spectrograph of the Mt. Wilson 2.5-m telescope and the Excimer laser is located in a basement Coude room.

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