RefMatchTask¶
RefMatchTask matches a source catalog with objects from a reference
catalog.
Processing summary¶
RefMatchTask runs this sequence of operations:
Find position reference stars that overlap the exposure.
Match input source catalog to the position reference stars.
Return statistics on quality of match.
Python API summary¶
from lsst.meas.astrom.ref_match import RefMatchTask
-
class
RefMatchTask(refObjLoader, **kwargs) Match an input source catalog with objects from a reference catalog
...
- attributeconfig
Access configuration fields and retargetable subtasks.
See also
See the RefMatchTask API reference for complete details.
Retargetable subtasks¶
matcher¶
- Default
lsst.meas.astrom.matchPessimisticB.MatchPessimisticBTask- Field type
reference object/source matcher
referenceSelector¶
How to select reference objects for cross-matching.
sourceSelector¶
- Default
'science'- 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
How to select sources for cross-matching.
Configuration fields¶
matchDistanceSigma¶
- Default
2- Field type
- Range
[0,inf)
the maximum match distance is set to mean_match_distance + matchDistanceSigma*std_dev_match_distance; ignored if not fitting a WCS
sourceFluxType¶
Source flux type to use in source selection.