Design of a truth sensor for the GMT laser tomography adaptive optics system
The GMT laser tomography adaptive optics (LTAO) system design has a truth sensor guiding on a natural guide star. The truth sensor is used to measure telescope segment piston errors and measure slowly varying non-common path aberrations. The challenge lies in measuring segment piston using faint natural guide stars and the wavefront delivered by the LTAO system. This requires a sensor that can make a direct phase measurement. It is demonstrated that an infrared, AO-corrected, unmodulated...[Show more]
|Collections||ANU Research Publications|
|Source:||Proceedings of SPIE - The International Society for Optical Engineering|
|01_van Dam_Design_of_a_truth_sensor_for_2012.pdf||214.28 kB||Adobe PDF||Request a copy|
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