lsst.meas.astrom

Tasks and methods for finding an astrometric solution.

Contributing

lsst.meas.astrom is developed at https://github.com/lsst/meas_astrom. You can find Jira issues for this module under here.

Task reference

Command-line tasks

No topics.

Tasks

AstrometryTask

Match an input source catalog with objects from a reference catalog and solve for the WCS.

DirectMatchTask

Simple, brute force matching of a source catalog to a reference catalog.

FitSipDistortionTask

Fit a TAN-SIP WCS given a list of reference object/source matches.

FitTanSipWcsTask

Fit a TAN-SIP WCS given a list of reference object/source matches.

MatchOptimisticBTask

Match sources to reference objects using the Optimistic Pattern Matcher B algorithm of Tabur 2007.

MatchPessimisticBTask

Match sources to reference objects.

RefMatchTask

Match an input source catalog with objects from a reference catalog.

Configurations

No topics.

Python API reference

lsst.meas.astrom Package

Functions

approximateWcs(wcs, bbox[, order, nx, ny, …])	Approximate an existing WCS as a TAN-SIP WCS
compose(*args, **kwargs)	Overloaded function.
denormalizeMatches(matches[, matchMeta])	Generate a denormalized Catalog of matches
displayAstrometry([refCat, sourceCat, …])	Show an astrometry debug image.
makeMatchStatistics(*args, **kwargs)	Overloaded function.
makeMatchStatisticsInPixels(*args, **kwargs)	Overloaded function.
makeMatchStatisticsInRadians(*args, **kwargs)	Overloaded function.
makeWcs(sipForward, sipReverse, skyOrigin)
plotAstrometry(matches[, refCat, sourceCat, …])	Plot reference objects, sources and matches
rotateWcsPixelsBy90(wcs, nQuarter, dimensions)
setMatchDistance(matches)	Set the distance field of the matches in a match list to the distance in radians on the sky.
transformWcsPixels(wcs, s)

Classes

AstrometryConfig	Config for AstrometryTask.
AstrometryTask(refObjLoader[, schema])	Match an input source catalog with objects from a reference catalog and solve for the WCS.
DirectMatchConfig	Configuration for DirectMatchTask.
DirectMatchConfigWithoutLoader	Configuration for DirectMatchTask when an already-initialized refObjLoader will be passed to this task.
DirectMatchTask([butler, refObjLoader])	Simple, brute force matching of a source catalog to a reference catalog.
FitAffineWcsConfig	Config for FitTanSipWcsTask.
FitAffineWcsTask([config, name, parentTask, log])	Fit a TAN-SIP WCS given a list of reference object/source matches.
FitSipDistortionConfig	Config for FitSipDistortionTask
FitSipDistortionTask(**kwargs)	Fit a TAN-SIP WCS given a list of reference object/source matches.
FitTanSipWcsConfig	Config for FitTanSipWcsTask.
FitTanSipWcsTask([config, name, parentTask, log])	Fit a TAN-SIP WCS given a list of reference object/source matches.
MatchOptimisticBConfig	Configuration for MatchOptimisticBTask
MatchOptimisticBTask(**kwargs)	Match sources to reference objects using the Optimistic Pattern Matcher B algorithm of Tabur 2007.
MatchPessimisticBConfig	Configuration for MatchPessimisticBTask
MatchPessimisticBTask(**kwargs)	Match sources to reference objects.
MatchTolerance([maxMatchDist])	Stores match tolerances for use in lsst.meas.astrom.AstrometryTask and later iterations of the matcher.
MatchTolerancePessimistic([maxMatchDist, …])	Stores match tolerances for use in AstrometryTask and later iterations of the matcher.
OutlierRejectionControl
PolynomialTransform
RefMatchConfig
RefMatchTask(refObjLoader, **kwargs)	Match an input source catalog with objects from a reference catalog.
ScaledPolynomialTransform
ScaledPolynomialTransformFitter
SipForwardTransform
SipReverseTransform
TransformedSkyWcsMaker(inputSkyWcs)	Convenience class for appending a shifting an input SkyWcs on sky and appending an affine transform.