Class SimpleFluxModel

• Defined in File SimplePhotometryModel.h

Inheritance Relationships

Base Type

• public lsst::jointcal::SimplePhotometryModel (Class SimplePhotometryModel)

Class Documentation

class SimpleFluxModel : public lsst::jointcal::SimplePhotometryModel

Public Functions

SimpleFluxModel(CcdImageList const &ccdImageList, double errorPedestal_ = 0)

void offsetFittedStar(FittedStar &fittedStar, double delta) const

Offset the appropriate flux or magnitude (by -delta).

Parameters

• fittedStar: The star to update.

• delta: The amount to update by.

double computeResidual(CcdImage const &ccdImage, MeasuredStar const &measuredStar) const

Compute the residual between the model applied to a star and its associated fittedStar.

\[ residual = Model(measuredStar) - fittedStar \]

Return

The residual.

Parameters

• ccdImage: The ccdImage where measuredStar resides.

• measuredStar: The measured star position to compute the residual of.

double transform(CcdImage const &ccdImage, MeasuredStar const &measuredStar) const

Return the on-sky transformed flux for measuredStar on ccdImage.

Return

The on-sky flux transformed from instFlux at measuredStar’s position.

Parameters

• [in] ccdImage: The ccdImage where measuredStar resides.

• measuredStar: The measured star position to transform.

double transformError(CcdImage const &ccdImage, MeasuredStar const &measuredStar) const

Return the on-sky transformed flux uncertainty for measuredStar on ccdImage. Identical to transform() until freezeErrorTransform() is called.

Return

The on-sky flux transformed from instFlux at measuredStar’s position.

Parameters

• [in] ccdImage: The ccdImage where measuredStar resides.

• measuredStar: The measured star position to transform.

double getRefError(RefStar const &refStar) const

Return the refStar error appropriate for this model (e.g. fluxErr or magErr).

double computeRefResidual(FittedStar const &fittedStar, RefStar const &refStar) const

Return the fittedStar - refStar residual appropriate for this model (e.g. flux - flux or mag - mag).

std::shared_ptr<afw::image::PhotoCalib> toPhotoCalib(CcdImage const &ccdImage) const

Return the mapping of ccdImage represented as a PhotoCalib.

Note

SimplePhotometryModel uses a spatially-invariant transform, so we can simplify the PhotoCalib.