Increasing the corrected field of view of an adaptive optical telescope

Details Increasing the corrected field of view of an adaptive optical telescope Increasing the corrected field of view of an adaptive optical telescope

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phdt.........9j&link_type=abstract

Ph.D. Thesis Air Force Inst. of Tech., Wright-Patterson AFB, OH. School of Engineering.

Physics

Optics

Adaptive Optics, Atmospheric Circulation, Atmospheric Turbulence, Field Of View, Telescopes, Distortion, Images, Laser Outputs, Light Beams, Mirrors, Pupils, Wave Fronts

Scientific paper

Current adaptive optical telescope designs use a single deformable mirror (DM) to compensate for atmospheric distortion. The corrected field of view (FOV) of an adaptive optics system could be increased through the use of multiple DM's optically conjugated to corresponding planes which sample the turbulence region in altitude. Often, the atmospheric turbulence responsible for the degradation of telescope images is concentrated in several layers. Each DM would correct for the component of the total wavefront in the pupil contributed by one or more layers. If the atmosphere does not possess a layered structure, the best fit of the turbulence profile can be made to a layered model. This dissertation describes and analyzes two novel methods for estimating the proper DM surfaces which would result in wide-FOV compensation. Both methods use multiple wavefront sensor measurements to estimate the three-dimensional turbulence structure. The wavefront measurements are made using artificial guide stars created by scattered laser light. The analysis includes the effects of noise, realistic models of systems components, and the limitations of artificial guide stars. It is shown that multiple-DM, multiple-guide-star systems can significantly increase the compensated FOV relative to single-DM, single-guide star systems.

Affiliated with

Also associated with

No associations

Rating

Increasing the corrected field of view of an adaptive optical telescope 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 Increasing the corrected field of view of an adaptive optical telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Increasing the corrected field of view of an adaptive optical telescope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1140960