PcaPsfDeterminerTask

class lsst.meas.algorithms.PcaPsfDeterminerTask(config, schema=None, **kwds)

Bases: BasePsfDeterminerTask

A measurePsfTask psf estimator.

Methods Summary

determinePsf(exposure, psfCandidateList[, ...])

Determine a PCA PSF model for an exposure given a list of PSF candidates.

Methods Documentation

determinePsf(exposure, psfCandidateList, metadata=None, flagKey=None)

Determine a PCA PSF model for an exposure given a list of PSF candidates.

Parameters

exposurelsst.afw.image.Exposure

Exposure containing the psf candidates.

psfCandidateListlist of lsst.meas.algorithms.PsfCandidate

A sequence of PSF candidates typically obtained by detecting sources and then running them through a star selector.

metadatalsst.daf.base import PropertyList or None, optional

A home for interesting tidbits of information.

flagKeystr, optional

Schema key used to mark sources actually used in PSF determination.

Returns

psflsst.meas.algorithms.PcaPsf

The measured PSF.

psfCellSetlsst.afw.math.SpatialCellSet

The PSF candidates.