#include <pmPSF.h>
Collaboration diagram for pmPSF:
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 28 of file pmPSF.h.
Data Fields | |
| pmModelType | type |
| PSF Model in use. | |
| psArray * | params |
| 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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apMag - psfMag (for PSF stars)
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ApResid vs (x,y,rflux) (rflux = ten(0.4*mInst)).
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PSF goodness statistic (unused??).
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Chisq vs flux fit (correction for systematic errors).
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scatter of ApResid
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apMag vs Radius
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number of stars used to measure ApResid
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number of stars used to measure PSF
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Model parameters (psPolynomial2D).
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implied residual sky offset from ApResid fit
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roll-over of ApResid fit
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PSF Model in use.
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1.4.4