Task Documentation

Documentation for existing data processing Tasks

Tasks are scattered over various implementation products and gathered together by their membership of the doxygen group LSST_task_documentation.

BaseMeasurementTask Ultimate base class for all measurement tasks.

ForcedMeasurementTask A subtask for measuring the properties of sources on a single exposure, using an existing "reference" catalog to constrain some aspects of the measurement.

ForcedPhotCcdTask A command-line driver for performing forced measurement on CCD images.

ForcedPhotCoaddTask A command-line driver for performing forced measurement on coadd images.

ProcessImageForcedTask A base class for command-line forced measurement drivers.

MeasureApCorrTask Task to measure aperture correction

SingleFrameMeasurementTask A subtask for measuring the properties of sources on a single exposure.

DipoleMeasurementTask Measurement of Sources, specifically ones from difference images, for characterization as dipoles.

ImagePsfMatchTask Psf-match two MaskedImages or Exposures using the sources in the images.

ModelPsfMatchTask Matching of two model Psfs, and application of the Psf-matching kernel to an input Exposure.

PsfMatchTask Base class for Psf Matching; should not be called directly.

SnapPsfMatchTask Image-based Psf-matching of two subsequent snaps from the same visit.

CalibrateTask Calibrate an exposure: measure PSF, subtract background, measure astrometry and photometry.

ExampleCmdLineTask An example intended to show how to write a command-line task.

ExampleSigmaClippedStatsTask A simple example subtask that computes sigma-clipped statistics of an image
ExampleSimpleStatsTask A very simple example subtask that computes statistics of an image.

MeasurePsfTask Measure the PSF.

PhotoCalTask Detect positive and negative sources on an exposure and return a new SourceCatalog.

RepairTask Interpolate over defects in an exposure and handle cosmic rays.

TransformTask Transform a SourceCatalog containing raw measurements to calibrated form.

SrcTransformTask Transform src measuremenents to calibrated form.

ForcedSrcTransformTask Transform forced_src measuremenents to calibrated form.

CoaddSrcTransformTask Transform measuremenents made on coadds to calibrated form.

SourceDetectionTask Detect positive and negative sources on an exposure and return a new table.SourceCatalog.

SourceDeblendTask Split blended sources into individual sources.

AssembleCcdTask Assemble a set of amplifier images into a full detector size set of pixels.

IsrTask Apply common instrument signature correction algorithms to a raw frame.

ANetAstrometryTask Use astrometry.net to match input sources with a reference catalog and solve for the Wcs

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

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

LoadAstrometryNetObjectsTask Load reference objects from astrometry.net index files

MatchOptimisticBTask Match sources to reference objects