Page 1
Testing Differential OTF and Phase Apodization Coronagraphy
Johanan L. CodonaSteward ObservatoryUniversity of Arizona
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Incoherent Imaging(Convolving with a PSF)
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Simplified View of Incoherent Imaging
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Fourier Optics vs. Incoherent Imaging
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Differential OTF in Practice
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A Differential OTF Experiment
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Simulated JWST measurement usingone segment actuator and two star images
Segmented mirrorexperiment using anIris AO MEMS DM.
Exploring dOTF for JWST Segment Phasing
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JWST dOTF using a Misaligned Filter Wheel
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JWST dOTF using a Segment
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Lab Experiment for Segment dOTF
Iris AO PTT DM
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Effect of Modification Area
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dOTF Deconvolution Experiments
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Effect of Photon Noise on dOTF
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Spatial Correlation in dOTF Noise
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Phase Apodization Coronagraphs
Pupil Phase Patterns Corresponding PSFsDiamond-turned
Apodizing Phase Plate (APP)
We could also use a deformable mirror (DM) to apply this phase pattern. One MEMS DM would replace multiple diamond-turned APPs and provide many programmable benefits.
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PAC for Arbitrary Pupil Shapes
Pupil PhasePattern
HypotheticalPupil
Baseline PSFPhase Apodized
PSF
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PAC for the GMT
Typical PhaseApodization
Pattern
GMTSegmented
Pupil
Baseline PSF Phase Apodized PSF