MeasureApCorrTask

MeasureApCorrTask measures aperture correction for the flux fields returned by lsst.meas.base.getApCorrNameSet.

Python API summary

from lsst.meas.algorithms.measureApCorr import MeasureApCorrTask
classMeasureApCorrTask(schema, **kwds)

Task to measure aperture correction...

attributeconfig

Access configuration fields and retargetable subtasks.

methodrun(exposure, catalog)

Measure aperture correction...

See also

See the MeasureApCorrTask API reference for complete details.

Retargetable subtasks

sourceSelector

Default
'flagged'
Field type
Single-selection RegistryField
Choices
'science'
lsst.meas.algorithms.sourceSelector.ScienceSourceSelectorTask
'references'
lsst.meas.algorithms.sourceSelector.ReferenceSourceSelectorTask
'objectSize'
lsst.meas.algorithms.objectSizeStarSelector.ObjectSizeStarSelectorTask
'flagged'
lsst.meas.algorithms.flaggedSourceSelector.FlaggedSourceSelectorTask
'astrometry'
lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask
'matcher'
lsst.meas.algorithms.matcherSourceSelector.MatcherSourceSelectorTask
'diaCatalog'
lsst.ip.diffim.diaCatalogSourceSelector.DiaCatalogSourceSelectorTask
Selector that sets the stars that aperture corrections will be measured from.

Configuration fields

allowFailure

Default
[]
Field type
str ListField
Allow these measurement algorithms to fail without an exception

fitConfig

Data type
lsst.afw.math._chebyshevBoundedFieldConfig.ChebyshevBoundedFieldConfig
Field type
ConfigField
Configuration used in fitting the aperture correction fields

minDegreesOfFreedom

Default
1
Field type
int RangeField
Range
[1,inf)
Minimum number of degrees of freedom (# of valid data points - # of parameters); if this is exceeded, the order of the fit is decreased (in both dimensions), and if we can’t decrease it enough, we’ll raise ValueError.

numIter

Default
4
Field type
int Field
Number of iterations for sigma clipping

numSigmaClip

Default
3.0
Field type
float Field
Number of standard devisations to clip at

refFluxName

Default
'slot_CalibFlux'
Field type
str Field
Field name prefix for the flux other measurements should be aperture corrected to match

Debugging

MeasureApCorrTask has a debug dictionary containing two boolean keys:

display
display = lsstDebug.Info(__name__).display
doPause
doPause = lsstDebug.Info(__name__).doPause