lsst.meas.algorithms¶
The lsst.meas.algorithms
module provides a variety of astronomical measurement algorithms.
LSST Reference Catalogs¶
Task reference¶
Tasks¶
- BasePsfDeterminerTask
Base class for PSF determiners
- ConvertReferenceCatalogTask
Class for producing HTM-indexed reference catalogs from external catalog data.
- DynamicDetectionTask
Detection of sources on an image with a dynamic threshold
- FlaggedSourceSelectorTask
A trivial SourceSelector that simply uses an existing flag field to filter a SourceCatalog.
- InstallGaussianPsfTask
Install a Gaussian PSF model in an exposure.
- LoadIndexedReferenceObjectsTask
Load reference objects from an indexed catalog ingested by IngestIndexReferenceTask.
- LoadReferenceObjectsTask
Abstract gen2 base class to load objects from reference catalogs.
- MakePsfCandidatesTask
Create PSF candidates given an input catalog.
- MatcherSourceSelectorTask
Select sources that are useful for matching.
- MeasureApCorrTask
Task to measure aperture correction
- ObjectSizeStarSelectorTask
A star selector that looks for a cluster of small objects in a size-magnitude plot.
- PcaPsfDeterminerTask
A measurePsfTask psf estimator.
- ReadFitsCatalogTask
Read an object catalog from a FITS table
- ReadTextCatalogTask
Read an object catalog from a text file
- ReferenceSourceSelectorTask
Reference source selector
- ReserveSourcesTask
Reserve sources from analysis
- ScienceSourceSelectorTask
Science source selector
- SkyObjectsTask
Generate a list of Footprints of sky objects.
- SourceDetectionTask
Create the detection task. Most arguments are simply passed onto pipe.base.Task.
- SubtractBackgroundTask
Subtract the background from an exposure
Command-line tasks¶
No topics.
Script reference¶
Contributing¶
lsst.meas.algorithms
is developed at https://github.com/lsst/meas_algorithms.
You can find Jira issues for this module under the meas_algorithms component.
Python API reference¶
lsst.meas.algorithms Package¶
Functions¶
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Add a set of exposures together. |
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Overloaded function. |
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Generate a list of Footprints of sky objects |
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Get the name of a flux field from a schema. |
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Return keys for flux and flux error. |
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Construct an ApCorrMap for a coadd |
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Read stamps from FITS file, allowing for only a subregion of the stamps to be read. |
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Write a single FITS file containing all stamps. |
Classes¶
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Stack masked images. |
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Subclass of |
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Select sources that are useful for astrometry. |
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Configuration that is likely to be shared by all PSF determiners |
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Base class for PSF determiners |
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Base class for source selectors |
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Base class for star selectors |
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Single stamp centered on a bright star, normalized by its annularFlux. |
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Collection of bright star stamps and associated metadata. |
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Select sources using a color limit |
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Special-case convert manager to deal with Gaia fluxes. |
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Convert a reference catalog from external files into the LSST HTM sharded format, using a multiprocessing Pool to speed up the work. |
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Base class for producing and loading indexed reference catalogs, shared between gen2 and gen3. |
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Class for producing HTM-indexed reference catalogs from external catalog data. |
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An abstract class to represent an arbitrary curve with interpolation. |
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The description of the on-disk storage format for the persisted reference catalog. |
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Subclass of |
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Configuration for DynamicDetectionTask |
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Detection of sources on an image with a dynamic threshold |
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Config for the findCosmicRays function |
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A trivial SourceSelector that simply uses an existing flag field to filter a SourceCatalog. |
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Factory for simple Gaussian PSF models |
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For gen2 backwards compatibility. |
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Class for producing and loading indexed reference catalogs (gen2 version). |
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Load reference objects from an indexed catalog ingested by IngestIndexReferenceTask. |
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Abstract gen2 base class to load objects from reference catalogs. |
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Select sources using a magnitude error limit |
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Select sources using a magnitude limit |
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Create PSF candidates given an input catalog. |
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Select sources that are useful for matching. |
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Configuration for MeasureApCorrTask |
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Task to measure aperture correction |
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A star selector that looks for a cluster of small objects in a size-magnitude plot. |
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A measurePsfTask psf estimator. |
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Read an object catalog from a FITS table |
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Read an object catalog from a text file |
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This class facilitates loading reference catalogs with gen 3 middleware. |
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Base class for reference object loaders, to facilitate gen2/gen3 code sharing. |
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Reference source selector |
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Select sources using flags |
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Select sources using star/galaxy separation |
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Configuration for reserving sources |
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Reserve sources from analysis |
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Scale the variance in a MaskedImage |
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Configuration for selecting science sources |
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Science source selector |
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Select sources using a flux signal-to-noise limit |
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Configuration for generating sky objects |
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Generate a list of Footprints of sky objects. |
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Configuration parameters for the SourceDetectionTask |
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Create the detection task. |
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Single stamp |
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Collection of stamps and associated metadata. |
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Config for SubtractBackgroundTask |
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Subtract the background from an exposure |