pmPSF Struct Reference
[Object Detection / Analysis Functions]

#include <pmPSF.h>

Collaboration diagram for pmPSF:

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Detailed Description

pmPSF data structure

It is useful to generate a model to define the point-spread-function which describes the flux distribution for unresolved sources in an image. In general, the PSF varies with position in the image. We allow any of the source models defined for the pmModel to represent the PSF. For a given source model, the 2D spatial variation of all of the source parameters, except the first four PSF-independent parameters, are represented as polynomial, stored in a psArray. The other elements of the structure define the quality of the PSF determination.

Definition at line 44 of file pmPSF.h.

Data Fields
pmModelType	type
	PSF Model in use.
psArray *	params_NEW
	Model parameters (psPolynomial2D).
psPolynomial1D *	ChiTrend
	Chisq vs flux fit (correction for systematic errors).
psPolynomial4D *	ApTrend
	ApResid vs (x,y,rflux) (rflux = ten(0.4*mInst)).
float	ApResid
	apMag - psfMag (for PSF stars)
float	dApResid
	scatter of ApResid
float	skyBias
	implied residual sky offset from ApResid fit
float	skySat
	roll-over of ApResid fit
float	chisq
	PSF goodness statistic (unused??).
int	nPSFstars
	number of stars used to measure PSF
int	nApResid
	number of stars used to measure ApResid
bool	poissonErrors
pmGrowthCurve *	growth
	apMag vs Radius

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Field Documentation

pmModelType pmPSF::type

PSF Model in use.

Definition at line 46 of file pmPSF.h.

psArray* pmPSF::params_NEW

Model parameters (psPolynomial2D).

Definition at line 47 of file pmPSF.h.

psPolynomial1D* pmPSF::ChiTrend

Chisq vs flux fit (correction for systematic errors).

Definition at line 51 of file pmPSF.h.

psPolynomial4D* pmPSF::ApTrend

ApResid vs (x,y,rflux) (rflux = ten(0.4*mInst)).

Definition at line 52 of file pmPSF.h.

float pmPSF::ApResid

apMag - psfMag (for PSF stars)

Definition at line 54 of file pmPSF.h.

float pmPSF::dApResid

scatter of ApResid

Definition at line 55 of file pmPSF.h.

float pmPSF::skyBias

implied residual sky offset from ApResid fit

Definition at line 56 of file pmPSF.h.

float pmPSF::skySat

roll-over of ApResid fit

Definition at line 57 of file pmPSF.h.

float pmPSF::chisq

PSF goodness statistic (unused??).

Definition at line 58 of file pmPSF.h.

int pmPSF::nPSFstars

number of stars used to measure PSF

Definition at line 59 of file pmPSF.h.

int pmPSF::nApResid

number of stars used to measure ApResid

Definition at line 60 of file pmPSF.h.

bool pmPSF::poissonErrors

Definition at line 61 of file pmPSF.h.

pmGrowthCurve* pmPSF::growth

apMag vs Radius

Definition at line 62 of file pmPSF.h.

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The documentation for this struct was generated from the following file:

• pmPSF.h

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