stella.adapter

Class QuadrantShift

java.lang.Object

util.PropertyContainer

stella.adapter.AbstractPinholeShift

stella.adapter.QuadrantShift

All Implemented Interfaces:

Cloneable, PinholeShift, Initializable, PropertySupplying

public class QuadrantShift
extends AbstractPinholeShift

Class that determines the pixel shift between pinhole and star by splitting the active frame without the outer border into four quadrants, then calculating the shift for each quadrant.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	QuadrantShift.Test Test class.

Nested classes/interfaces inherited from class stella.adapter.AbstractPinholeShift

AbstractPinholeShift.Background, AbstractPinholeShift.Evaluate, AbstractPinholeShift.Reconstruct

Field Summary

Fields

Modifier and Type	Field and Description
private static double	DEFCENTERWEIGHT Use the unit vectors, not individual quadrant shifts.
static String	KEY_CENTERWEIGHT If 1, use center of grav.

Fields inherited from class stella.adapter.AbstractPinholeShift

KEY_ADNOISE, KEY_APPLICABLE, KEY_GAIN, KEY_PINHOLE, KEY_SIGMACLIP, KEY_SKYTHICK

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Constructor Summary

Constructors

Constructor and Description
QuadrantShift(Map<String,String> prop) Constructs a new CenterOfGravityShift object.

Method Summary

Modifier and Type	Method and Description
Vector2D	getBackground(MImageHDU hdu) This method calculates the background as the median of a frame at the outer edge of the apllicable window.
Point2D	initFiberView(MFits ccd) Returns the center of gravity shift of the image from the pinhole position.
Point2D	solveFiberView() Pure model, no solving.

Methods inherited from class stella.adapter.AbstractPinholeShift

backgroundFrameMean, backgroundFrameMedian, backgroundMean, backgroundMedian, getAduSignal, getApplicableWindow, getFlux, getFwhm, getPinholePosition, getSignalToNoise, init

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, clone, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, initProperties, isNew, parseObject, parseObject, reload, reload, removeProperty, requires, rescanned, setObject, setProperties, setProperty, stringProperties, toString

Methods inherited from class java.lang.Object

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

Field Detail

KEY_CENTERWEIGHT

public static final String KEY_CENTERWEIGHT

If 1, use center of grav. on quadrant, if zero quadrant unit vectors.

See Also:

Constant Field Values

DEFCENTERWEIGHT

private static final double DEFCENTERWEIGHT

Use the unit vectors, not individual quadrant shifts.

See Also:

Constant Field Values

Constructor Detail

QuadrantShift

public QuadrantShift(Map<String,String> prop)

Constructs a new CenterOfGravityShift object.

Method Detail

getBackground

public Vector2D getBackground(MImageHDU hdu)

This method calculates the background as the median of a frame at the outer edge of the apllicable window.

Returns:

The background ADU in x and its ADU-sigma in y.

initFiberView

public Point2D initFiberView(MFits ccd)

Returns the center of gravity shift of the image from the pinhole position. The true center of gravity is scaled with two functions to return true shifts.

Parameters:

ccd - The image of the pinhole entrance

Returns:

The pixel shift from the pinhole center to the star in a first model.

solveFiberView

public Point2D solveFiberView()

Pure model, no solving.

Returns:

The pixel shift from the pinhole center to the star in the fitted model