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Adaptive optics: analytical model for PSF estimation
1998 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

An analytical model to estimate the performance of an adaptive optics system is presented, together with a review of the subject from a contemporary perspective. The power spectral density and the point spread function of the compensated wavefront are obtained analytically for a Shack-Hartmann based adaptive optics system under von Karman turbulence. While existing numerical models of high accuracy and realism are slow due to massive computation demands, the method presented in this report allows a very fast estimation of the system performance, at a cost of a marginal loss in accuracy due to simplified modeling. An IDL program to compute this numerically provides the possibility of fast on-line system performance evaluation and PSF estimation. This Master's diploma work was done for the Adaptive Optics Team at the European Southern Observatory ESO in Munich, Germany.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Adaptive optics, atmospheric turbulence, von Karman, Shack-Hartmann, wavefront sensors, point spread functions, analytical model, performance estimation
Keyword [sv]
URN: urn:nbn:se:ltu:diva-53722ISRN: LTU-EX--98/373--SELocal ID: ab905beb-5029-4376-9827-4da9ed7df6e2OAI: diva2:1027098
Subject / course
Student thesis, at least 30 credits
Educational program
Civil Engineering programmes 1997-2000, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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