Verification of a System to Prevent Aircraft Illumination by Adaptive Optics Laser Beacons

Details Verification of a System to Prevent Aircraft Illumination by Adaptive Optics Laser Beacons Verification of a System to Prevent Aircraft Illumination by Adaptive Optics Laser Beacons

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasp..111.1577l&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 111, Issue 766, pp. 1577-1585.

Physics

Optics

Instrumentation: Adaptive Optics, Instrumentation: Miscellaneous, Telescopes

Scientific paper

Laser beams directed into the sky from astronomical observatories to generate guide beacons for adaptive optics image-sharpening systems are a potential hazard to aircraft. Detection systems are needed to sense aircraft and interrupt the laser beam to prevent accidental illumination. We describe here a system designed for this task. A computer examines CCD images of the sky over a wide field of view and uses a motion detection algorithm to find tracks made by aircraft lights. The results of tests, conducted with simultaneous radar coverage from Tucson International Airport, are reported. A test with an actual laser beacon at the Multiple Mirror Telescope in which Mars was used as a simulated aircraft is also described.

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