lsst.pipe.tasks
21.0.0-25-g85b8e57b+773e41f820
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Public Member Functions | |
def | __init__ (self, butler=None, initInputs=None, *args, **kwargs) |
def | extractStamps (self, inputExposure, refObjLoader=None) |
def | warpStamps (self, stamps, pixCenters) |
def | run (self, inputExposure, refObjLoader=None, dataId=None) |
def | runDataRef (self, dataRef) |
def | runQuantum (self, butlerQC, inputRefs, outputRefs) |
Public Attributes | |
modelStampSize | |
modelCenter | |
Static Public Attributes | |
ConfigClass = ProcessBrightStarsConfig | |
RunnerClass = pipeBase.ButlerInitializedTaskRunner | |
The description of the parameters for this Task are detailed in :lsst-task:`~lsst.pipe.base.PipelineTask`. Notes ----- `ProcessBrightStarsTask` is used to extract, process, and store small image cut-outs (or "postage stamps") around bright stars. It relies on three methods, called in succession: `extractStamps` Find bright stars within the exposure using a reference catalog and extract a stamp centered on each. `warpStamps` Shift and warp each stamp to remove optical distortions and sample all stars on the same pixel grid. `measureAndNormalize` Compute the flux of an object in an annulus and normalize it. This is required to normalize each bright star stamp as their central pixels are likely saturated and/or contain ghosts, and cannot be used.
Definition at line 139 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.__init__ | ( | self, | |
butler = None , |
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initInputs = None , |
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* | args, | ||
** | kwargs | ||
) |
Definition at line 164 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.extractStamps | ( | self, | |
inputExposure, | |||
refObjLoader = None |
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) |
Read position of bright stars within `inputExposure` from refCat and extract them. Parameters ---------- inputExposure : `afwImage.exposure.exposure.ExposureF` The image from which bright star stamps should be extracted. refObjLoader : `LoadIndexedReferenceObjectsTask`, optional Loader to find objects within a reference catalog. Returns ------- result : `lsst.pipe.base.Struct` Result struct with components: - ``starIms``: `list` of stamps - ``pixCenters``: `list` of corresponding coordinates to each star's center, in pixels. - ``GMags``: `list` of corresponding (Gaia) G magnitudes. - ``gaiaIds``: `np.ndarray` of corresponding unique Gaia identifiers.
Definition at line 180 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.run | ( | self, | |
inputExposure, | |||
refObjLoader = None , |
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dataId = None |
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) |
Identify bright stars within an exposure using a reference catalog, extract stamps around each, then preprocess them. The preprocessing steps are: shifting, warping and potentially rotating them to the same pixel grid; computing their annular flux and normalizing them. Parameters ---------- inputExposure : `afwImage.exposure.exposure.ExposureF` The image from which bright star stamps should be extracted. refObjLoader : `LoadIndexedReferenceObjectsTask`, optional Loader to find objects within a reference catalog. dataId : `dict` or `lsst.daf.butler.DataCoordinate` The dataId of the exposure (and detector) bright stars should be extracted from. Returns ------- result : `lsst.pipe.base.Struct` Result struct with component: - ``brightStarStamps``: ``bSS.BrightStarStamps``
Definition at line 312 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.runDataRef | ( | self, | |
dataRef | |||
) |
Read in required calexp, extract and process stamps around bright stars and write them to disk. Parameters ---------- dataRef : `lsst.daf.persistence.butlerSubset.ButlerDataRef` Data reference to the calexp to extract bright stars from.
Definition at line 364 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.runQuantum | ( | self, | |
butlerQC, | |||
inputRefs, | |||
outputRefs | |||
) |
Definition at line 379 of file processBrightStars.py.
def lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.warpStamps | ( | self, | |
stamps, | |||
pixCenters | |||
) |
Warps and shifts all given stamps so they are sampled on the same pixel grid and centered on the central pixel. This includes rotating the stamp depending on detector orientation. Parameters ---------- stamps : `collections.abc.Sequence` [`afwImage.exposure.exposure.ExposureF`] Image cutouts centered on a single object. pixCenters : `collections.abc.Sequence` [`geom.Point2D`] Positions of each object's center (as obtained from the refCat), in pixels. Returns ------- warpedStars : `list` [`afwImage.maskedImage.maskedImage.MaskedImage`]
Definition at line 238 of file processBrightStars.py.
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static |
Definition at line 160 of file processBrightStars.py.
lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.modelCenter |
Definition at line 175 of file processBrightStars.py.
lsst.pipe.tasks.processBrightStars.ProcessBrightStarsTask.modelStampSize |
Definition at line 167 of file processBrightStars.py.
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static |
Definition at line 162 of file processBrightStars.py.