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. |
MatchProbabilisticConfig |
Configuration for the MatchProbabilistic matcher. |
MatchProbabilisticTask(**kwargs) |
Run MatchProbabilistic on a reference and target catalog covering the same tract. |
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. |
MatcherProbabilistic(config) |
A probabilistic, greedy catalog matcher. |
OutlierRejectionControl |
|
PessimisticPatternMatcherB(reference_array, log) |
Class implementing a pessimistic version of Optimistic Pattern Matcher B (OPMb) from `Tabur (2007)`_, as described in `DMTN-031`_ |
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. |