CHARA Community Workshop Data Format, Modeling, Data Format, Modeling, and Imaging and Imaging Data Format, Modeling, Data Format, Modeling, and Imaging and Imaging Gail Schaefer The CHARA Array of Georgia State University Mount Wilson, CA With contributions from: Fabien Baron and Laurent Bourgès
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Data Format, Modeling, and Imaging - Georgia State University · CHARA Community Workshop Data Format, Modeling, and Imaging Data Format, Modeling, and Imaging Gail Schaefer The CHARA
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CHARA Community Workshop
Data Format, Modeling, Data Format, Modeling, and Imaging and Imaging
Data Format, Modeling, Data Format, Modeling, and Imaging and Imaging
Gail Schaefer
The CHARA Array ofGeorgia State University
Mount Wilson, CA
With contributions from:Fabien Baron and Laurent Bourgès
CHARA Community Workshop
Data ReductionData ReductionData ReductionData Reduction
● CHARA staff and consortium members will support data reduction to OIFITS format
● Many users may find it informative to run reduction software and calibration themselves
● Data analysis, model fitting, image reconstruction performed by users
CHARA Community Workshop
OIFITS FormatOIFITS FormatOIFITS FormatOIFITS Format
● OIFITS: Data exchange standard for Optical Interferometry
Different Reconstruction Different Reconstruction Methods and RegularizersMethods and RegularizersDifferent Reconstruction Different Reconstruction
Methods and RegularizersMethods and RegularizersOriginal Image
(LkHα 101)BSMEM MiRA + MEM
regularizer
MiRA + compactnessquadratic
MiRA + edge-preserving
SQUEEZE with l0 norm
wavelet coefficients
Thiebaut& Young(2017)
CHARA Community Workshop
AZ Cyg
2012 IAU Interferometry Beauty Contest
Baron et al. 2012
Truth/Model
High Fidelity Imaging of High Fidelity Imaging of Complex Targets is DifficultComplex Targets is Difficult
High Fidelity Imaging of High Fidelity Imaging of Complex Targets is DifficultComplex Targets is Difficult
CHARA Community Workshop
Baron et al., in prep
Isotropicwavelets
Arclets
Gradient
Sparsity basis
Ongoing Research on Ongoing Research on Better RegularizationBetter RegularizationOngoing Research on Ongoing Research on Better RegularizationBetter Regularization