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SUMMARY:Pyramid sensor based wavefront correction in Astronomy and Ophthal
 mology - Ronny  Ramlau (Johannes Kepler Universität)
DTSTART:20230623T133000Z
DTEND:20230623T143000Z
UID:TALK201358@talks.cam.ac.uk
DESCRIPTION:Adaptive Optics systems are frequently used to improve the ima
 ging quality of optical systems\, in particular in astronomy\, ophthalmolo
 gy and microscopy. To achieve this goal\, the incoming wavefronts from the
  science object are corrected based on measurements with a suitable wavefr
 ont sensor. Unfortunately\, the wavefronts cannot be measured directly but
  have to be obtained by solving an ill-posed inverse problem. We in partic
 ular consider the Pyramid sensor which has superior optical properties. Ma
 thematically\, the sensor can be modelled by a nonlinear operator equation
 . In our talk\, we will present the mathematical model as well as its anal
 ysis\, and provide simulation and reconstruction results. As a reconstruct
 ion scheme suitabale in particular when the reconstruction process has to 
 be done frequently\, we introduce and analyze regularized recycling techni
 ques. Finally\, we present applications from astronomy and ophthalmology.&
 nbsp\;
LOCATION:Seminar Room 1\, Newton Institute
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