Physics – Optics
Scientific paper
Sep 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010amos.confe..19j&link_type=abstract
Proceedings of the Advanced Maui Optical and Space Surveillance Technologies Conference, held in Wailea, Maui, Hawaii, September
Physics
Optics
Scientific paper
Telescopes with adaptive optics systems can measure high-order aberrations using an artificial laser beacon without the need for a relatively bright object near the object being imaged. Unfortunately, tilt and focus measurements are difficult to obtain from a laser beacon. One solution is to use light from the object being imaged to measure tilt and focus. We characterize the performance of a Shack-Hartmann wavefront sensor with 2_2 sub-apertures for measuring tilt and focus. Specifically, we implemented this scheme for the sodium beacon adaptive optics upgrade to the Starfire Optical Range (SOR) 3.5 meter telescope [1]. We use a wave-optics simulation to predict the performance of the tilt and focus sensor in the SOR sodium beacon system, and compare the results to laboratory measurements.
Brown Jacqueline
Johnson Rachael
Spinhirne James
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