Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes

Details Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993wpaf.reptq....h&link_type=abstract

M.S. Thesis Air Force Inst. of Tech., Wright-Patterson AFB, OH.

Physics

Optics

Actuators, Adaptive Optics, Misalignment, Optical Transfer Function, Signal To Noise Ratios, Telescopes, Atmospheric Turbulence, Brightness, Computerized Simulation, Failure, Mathematical Models, Mirrors, Time Lag

Scientific paper

Large-aperture telescopes require adaptive optics in order to compensate for atmospheric turbulence which would otherwise negate the resolution advantages of using large apertures. This investigation analyzes the impacts of misalignments and failures, in the deformable mirror actuators, upon the performance of such systems. A numerical simulation of a standard adaptive optics system is used to generate characteristic optical transfer function (OTF) and signal-to-noise ratio (SNR) performance metrics. The performance impacts of the misalignments are shown to be dependent upon the Fried parameter (effective telescope diameter), the source object brightness, and the control system time delay. The degree of performance degradation is directly related to the relative value of the Fried parameter to the deformable mirror displacement (misalignment cases) and the effective actuator spacing (actuator failure cases). The results indicate that the impact of misalignments and failures is small when seeing conditions are good or the percentage misalignments and failures are small.

Affiliated with

Also associated with

No associations

Rating

Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Performance impacts for actuator misalignments and failures in large-aperture adaptive-optic telescopes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1302943