holography far-side images with hmi irene gonzalez hernandez charlie lindsey richard bogart phil...
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Holography far-side images with HMI
Irene Gonzalez HernandezCharlie LindseyRichard BogartPhil Scherrer
Sebastian Couvidat, and the calibration team !
Quick solution (I)
High resolution Dopplergrams
Low resolution Dopplergrams
Binning Algorithm
Stanford
Low resolution Dopplergrams
Tucson
Farside maps
Farside maps
NetDRMS GONG farside pipeline
Tucson Web Publication
StanfordWeb Publication
First attempts to calculate far-side maps
Apr. 4 2010
May 7 2010
May 13 2010
First attempts to calculate far-side mapsHMI cuts of the central region of the “far-side map”
First attempts to calculate far-side mapsGONG cuts of the central region of the “far-side map”
The input dataHMI (binned) postel projected Doppler images
The input data
HMI (binned) postel projected Doppler images
Temporal series of a single pixel
The input dataHMI averaged postel-projected Dopplergram
The input dataAcoustic power map
The input dataDoppler Parameters
The input dataSensitivity of the Doppler signature to the radial velocity of the Spacecraft
The input dataSensitivity of the Doppler signature to the radial velocity of the Spacecraft
Quick solution (II)
FS Preprocessor
Fourier transformeddata cube
Tucson
Farside maps
NetDRMSModified GONG farside pipeline
Tucson Web Publication
StanfordWeb Publication
High resolution Dopplergrams
Fourier transformed data cube
Stanford
H. Farside maps
T-D. Farside maps+
Time-distance pipeline
The FS Preprocessor
•Postel Projection of Dopplergrams•Quality control:• Frame rejection (based on NaN values)• Glitch/cosmic-ray recognition and removal (deviation from
temporal trends)• Conformation to appropriate rotational profile
•Spatial filtering/condensation (what is this?)•Spectral filtering: extraction of the 2.5-4.5 mHz band
•** Possibility of binning down to 90sec. Cadence (Nyquist frequency of 5.6mHz)
The FS Preprocessor
Possibility of binning down to 90sec. Cadence (Nyquist frequency of 5.6mHz)