stella.adapter

Interface Guiding.RawStar

All Superinterfaces:

Serializable

All Known Implementing Classes:

GuiderStar

Enclosing interface:

Guiding

public static interface Guiding.RawStar
extends Serializable

The interface defintion for raw stars. These are objects extracted on a guiding frame. Position information is in the guider CCD x/y system, magnitudes are instrumental magnitudes.

Method Summary

Modifier and Type	Method and Description
double	getAngle() Returns the position angle of the elongation of the image as an angle in degrees, ranging from -90 to +90 degrees.
double	getArea() Returns the area of the raw star in squared pixels.
Point2D	getCenter() Returns the pixel coordinates of the star center.
double	getElongation() Returns the elongation measure of the star image.
double	getFullWidthHalfMaximum() Returns an estimated fwhw in pixel.
double	getInstrumentalMagnitude() Returns the instrumental magnitude, a logarithmic measure of the stellar brightness.
double	getSharpness() Returns the sharpness measure of the raw image.
double	getSky() Returns the average of the good pixel values inside the search box.
double	getStroke() Returns an estimate on the linear extension of the raw star, tailored to detect read-out stripes.

Method Detail

getCenter

Point2D getCenter()

Returns the pixel coordinates of the star center. This is a Point2D object to support non-integer positions.

getElongation

double getElongation()

Returns the elongation measure of the star image.

getAngle

double getAngle()

Returns the position angle of the elongation of the image as an angle in degrees, ranging from -90 to +90 degrees. Zero is in CCD x-direction, counting is counter-clockwise as usual.

Returns:

The position angle of the major axis of the star ellipsoid.

getArea

double getArea()

Returns the area of the raw star in squared pixels.

getStroke

double getStroke()

Returns an estimate on the linear extension of the raw star, tailored to detect read-out stripes. The lesser the value, the higher the probability that we have a column-readout stripe.

getFullWidthHalfMaximum

double getFullWidthHalfMaximum()

Returns an estimated fwhw in pixel.

getSharpness

double getSharpness()

Returns the sharpness measure of the raw image. This measure can be used to distinguish between stars and extended objects.

getSky

double getSky()

Returns the average of the good pixel values inside the search box.

getInstrumentalMagnitude

double getInstrumentalMagnitude()

Returns the instrumental magnitude, a logarithmic measure of the stellar brightness.