ForcedGaapFluxPlugin

class lsst.meas.extensions.gaap.ForcedGaapFluxPlugin(config, name, schemaMapper, metadata, logName=None)

Bases: BaseGaapFluxMixin, ForcedPlugin

Gaussian Aperture and PSF (GAaP) photometry plugin in forced mode.

This is the GAaP plugin to run for consistent colors across the bandpasses.

Parameters

configGaapFluxConfig

Plugin configuration.

namestr

Plugin name, for registering.

schemaMapperlsst.afw.table.SchemaMapper

A mapping from reference catalog fields to output catalog fields. Output fields will be added to the output schema. for the measurement output catalog. New fields will be added to hold measurements produced by this plugin.

metadatalsst.daf.base.PropertySet

Plugin metadata that will be attached to the output catalog.

logNamestr, optional

Name to use when logging errors. This will be provided by the measurement framework.

Methods Summary

getExecutionOrder()	Get the relative execution order of this plugin.
measure(measRecord, exposure, refRecord, refWcs)	Measure the properties of a source given an image and a reference.

Methods Documentation

classmethod getExecutionOrder() → float

Get the relative execution order of this plugin.

Must be reimplemented as a class method by concrete derived classes.

measure(measRecord, exposure, refRecord, refWcs)

Measure the properties of a source given an image and a reference.

Parameters

exposurelsst.afw.image.ExposureF

The pixel data to be measured, together with the associated PSF, WCS, etc. All other sources in the image should have been replaced by noise according to deblender outputs.

measRecordlsst.afw.table.SourceRecord

Record describing the object being measured. Previously-measured quantities will be retrieved from here, and it will be updated in-place with the outputs of this plugin.

refRecordlsst.afw.table.SimpleRecord

Additional parameters to define the fit, as measured elsewhere.

refWcslsst.afw.geom.SkyWcs or lsst.afw.geom.Angle

The coordinate system for the reference catalog values. An Angle may be passed, indicating that a local tangent WCS should be created for each object using the given angle as a pixel scale.

Notes

In the normal mode of operation, the source centroid will be set to the WCS-transformed position of the reference object, so plugins that only require a reference position should not have to access the reference object at all.