stella.adapter

Class AveragePinhole.FullPinhole

java.lang.Object

astro.fits.AbstractFitsImageModel

stella.adapter.AbstractPinholeModel.AbstractPinholeFits

stella.adapter.AveragePinhole.FullPinhole

All Implemented Interfaces:

MultidimensionalDataModel

Enclosing class:

AveragePinhole

public static class AveragePinhole.FullPinhole
extends AbstractPinholeModel.AbstractPinholeFits

A pinhole model is the model of a star with fitted intensity and FWHM close to the fixed pinhole position at the given coordinates. We fit for the position of the pinhole (as an offset to a fixed position), the position of the star relativ to the pinhole, the fwhm and flux of the star, the steepness of the pinhole, the pinhole diameter and the remaining reflectivity of the pinhole.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	fitdeep If true, we also try to fit the deepness of the pinhole.
private boolean	fitflux
private boolean	fitpos If true, we also try to fit the position of the pinhole.
private boolean	fitsize If true, we also try to fit the diameter of the pinhole.
private boolean	fitstar If true, we also try to fit the FWHM of the star.
private boolean	fitsteep If true, we also try to fit the steepness of the pinhole.
private VectorG	m0 A first estimate of the model parameters, without steep&deep
private double	pindeep For modeling the pinhole.
private Point2D	pinhole The fixed pinhole position.
private double	pinsize The pinhole size in pixel.
private double	pinsteep For modeling the pinhole, the steepness.
private double	starsize For modeling the pinhole.
private double	totalflux The estimate of the total star flux.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FullPinhole(MImageHDU measured, Rectangle box, double back, double backerr, double vanish, double starfwhm, Point2D pos, double pinfwhm, double k, double deep, double moffat) Constructs a new data model for the pinhole.

Method Summary

Modifier and Type	Method and Description
VectorG	evaluateModel(VectorG dxdy, VectorG xy) Per definition, the independant variable, time, is here a two-dimensional vector specifying the location of the pixel.
private void	fitDeep(boolean b)
private void	fitFwhm(boolean b)
private void	fitPosition(boolean b)
private void	fitStarFlux(boolean b)
private void	fitStarFwhm(boolean b)
private void	fitSteep(boolean b)
VectorG	getFirstModel() Returns a first estimate.
VectorG	getFirstStep() Returns a first step.
int	getParameterCount() The model parameters are Shift of star to pinhole in x-direction, pixel Shift of star to pinhole in y-direction, pixel Total ADU flux of star FWHM of star in pixel. Shift of true pinhole to pinhole-0 in x-direction, pixel Shift of true pinhole to pinhole-0 in y-direction, pixel FWHM of pinhole. steppness of pinhole Reflectivity of pinhole This we
double[]	getStarModel(VectorG dxdy) Per definition, the model data is a Vector of all data points, not an area.

Methods inherited from class stella.adapter.AbstractPinholeModel.AbstractPinholeFits

applyBackground, applyBackground

Methods inherited from class astro.fits.AbstractFitsImageModel

aboveBackground, dimension, dimensionOfIndependent, equalData, getArea, getFloatImageData, getFloatImageDataErrors, getFloatImageModel, getFloatImageResiduals, getImageData, getImageDataErrors, getImageModel, getImageResiduals, getMeasureCount, getMeasurementErrors, getMeasures, getMetric, getModel, getResiduals, getRms, getTimes, getTotalErrors, getUpLeft, getYX, photonAndReadoutNoise, setAduErrors, subtract

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

pinhole

private final Point2D pinhole

The fixed pinhole position.

pinsize

private final double pinsize

The pinhole size in pixel.

pinsteep

private final double pinsteep

For modeling the pinhole, the steepness.

starsize

private final double starsize

For modeling the pinhole.

pindeep

private final double pindeep

For modeling the pinhole.

totalflux

private final double totalflux

The estimate of the total star flux.

m0

private final VectorG m0

A first estimate of the model parameters, without steep&deep

fitstar

private boolean fitstar

If true, we also try to fit the FWHM of the star.

fitpos

private boolean fitpos

If true, we also try to fit the position of the pinhole.

fitsize

private boolean fitsize

If true, we also try to fit the diameter of the pinhole.

fitsteep

private boolean fitsteep

If true, we also try to fit the steepness of the pinhole.

fitdeep

private boolean fitdeep

If true, we also try to fit the deepness of the pinhole.

fitflux

private boolean fitflux

Constructor Detail

FullPinhole

private FullPinhole(MImageHDU measured,
                    Rectangle box,
                    double back,
                    double backerr,
                    double vanish,
                    double starfwhm,
                    Point2D pos,
                    double pinfwhm,
                    double k,
                    double deep,
                    double moffat)
             throws IOException,
                    BasicFitsException

Constructs a new data model for the pinhole. The model is constructed with the measured data (plus the applicable box) and the measured backgound noise. The modeling parameters for the pinhole and the beta of the stellar Moffat function are also stated.

Throws:

IOException

BasicFitsException

Method Detail

fitStarFlux

private void fitStarFlux(boolean b)

fitStarFwhm

private void fitStarFwhm(boolean b)

fitPosition

private void fitPosition(boolean b)

fitFwhm

private void fitFwhm(boolean b)

fitDeep

private void fitDeep(boolean b)

fitSteep

private void fitSteep(boolean b)

getParameterCount

public int getParameterCount()

The model parameters are

• Shift of star to pinhole in x-direction, pixel
• Shift of star to pinhole in y-direction, pixel
• Total ADU flux of star
• FWHM of star in pixel.
• Shift of true pinhole to pinhole-0 in x-direction, pixel
• Shift of true pinhole to pinhole-0 in y-direction, pixel
• FWHM of pinhole.
• steppness of pinhole
• Reflectivity of pinhole

This we

Returns:

9

getFirstModel

public VectorG getFirstModel()

Returns a first estimate.

Specified by:

getFirstModel in class AbstractPinholeModel.AbstractPinholeFits

getFirstStep

public VectorG getFirstStep()

Returns a first step.

Specified by:

getFirstStep in class AbstractPinholeModel.AbstractPinholeFits

getStarModel

public double[] getStarModel(VectorG dxdy)

Per definition, the model data is a Vector of all data points, not an area. The model parameters are

• Shift of star to pinhole-0 in x-direction, pixel
• Shift of star to pinhole-0 in y-direction, pixel
• Total ADU flux of star
• FWHM of star in pixel.
• Shift of true pinhole to pinhole-0 in x-direction, pixel
• Shift of true pinhole to pinhole-0 in y-direction, pixel
• FWHM of pinhole.
• steppness of pinhole
• Reflectivity of pinhole

Specified by:

getStarModel in class AbstractPinholeModel.AbstractPinholeFits

evaluateModel

public VectorG evaluateModel(VectorG dxdy,
                             VectorG xy)

Per definition, the independant variable, time, is here a two-dimensional vector specifying the location of the pixel. It can be non-integer. The model parameters are

• Shift of star to pinhole in x-direction, pixel
• Shift of star to pinhole in y-direction, pixel
• Total ADU flux of star
• FWHM of star in pixel.

Parameters:

dxdy - The model parameters as defined above

The - pixel location as a two-dim vector.