GbdesGlobalAstrometricFitConfig#

class lsst.drp.tasks.gbdesAstrometricFit.GbdesGlobalAstrometricFitConfig(*args, **kw)#

Bases: GbdesAstrometricFitConfig

Attributes Summary

`allowSelfMatches`	Allow multiple sources from the same visit to be associated with the same object.
`applyRefCatProperMotion`	Apply proper motion to shift reference catalog to epoch of observations.
`buildCamera`	Subtask to build camera from astrometric model.
`clipFraction`	Minimum fraction of clipped sources that triggers a new fit iteration.
`clipThresh`	Threshold for clipping outliers in the fit (in standard deviations) (`float`, default `5.0`)
`color`	The bands to use for calculating color.
`connections`	Field which refers to a dynamically added configuration class which is based on a PipelineTaskConnections class.
`deviceModel`	List of mappings to apply to transform from detector pixels to intermediate frame.
`devicePolyOrder`	Order of device polynomial model.
`excludeNonPMObjects`	Exclude reference objects without proper motion/parallax information.
`exposureModel`	List of mappings to apply to transform from intermediate frame to sky coordinates.
`exposurePolyOrder`	Order of exposure polynomial model.
`fitProperMotion`	Fit the proper motions of the objects.
`fitReserveFraction`	Fraction of objects to reserve from fit for validation.
`fitReserveRandomSeed`	Set the random seed for selecting data points to reserve from the fit for validation.
`healpix`	Run using all visits overlapping a healpix pixel with this order instead of a tract.
`matchRadius`	Matching tolerance between associated objects (arcseconds).
`minDetectorFraction`	Minimum fraction of detectors with valid WCSs per visit required to include the visit in the fit.
`minMatches`	Number of matches required to keep a source object.
`modelComponents`	List of mappings to apply to transform from pixels to sky, in order of their application.Supported options are 'INSTRUMENT/DEVICE' and 'EXPOSURE'.
`referenceColor`	The color for which DCR is defined as zero.
`referenceFilter`	Name of filter to load from reference catalog.
`referenceSelector`	How to down-select the loaded astrometry reference catalog.
`referenceSystematicError`	Systematic error padding added in quadrature for the reference catalog (marcsec).
`saveCameraModel`	Save the 'device' part of the model to be used as input in future runs.
`saveCameraObject`	Build and output an lsst.afw.cameraGeom.Camera object using the fit per-detector model.
`saveLogOutput`	Flag to enable/disable saving of log output for a task, enabled by default.
`saveModelParams`	Save the parameters and covariance of the WCS model.
`setRefEpoch`	Set the reference epoch to a fixed value in MJD (if None, median observation date is used) (`float`, default `None`)
`sourceFluxType`	Source flux field to use in source selection and to get fluxes from the catalog.
`sourceSelector`	How to select sources for cross-matching.
`systematicError`	Systematic error padding added in quadrature for the science catalogs (marcsec).
`useColor`	Use color information to correct for differential chromatic refraction.
`useInputCameraModel`	Use a preexisting model for the 'device' part of the model.
`visitOverlap`	The linkage distance threshold above which clustered groups of visits will not be merged together in an agglomerative clustering algorithm.

Attributes Documentation

allowSelfMatches#: Allow multiple sources from the same visit to be associated with the same object. (bool, default False)

applyRefCatProperMotion#: Apply proper motion to shift reference catalog to epoch of observations. (bool, default True)

buildCamera#: Subtask to build camera from astrometric model. (ConfigurableInstance, default <class 'lsst.drp.tasks.build_camera.BuildCameraFromAstrometryConfig'>)

clipFraction#: Minimum fraction of clipped sources that triggers a new fit iteration. (float, default 0.0)

clipThresh#: Threshold for clipping outliers in the fit (in standard deviations) (float, default 5.0)

color#: The bands to use for calculating color. (List, default ['g', 'i'])

connections: pexConfig.ConfigField#: Field which refers to a dynamically added configuration class which is based on a PipelineTaskConnections class.

deviceModel#: List of mappings to apply to transform from detector pixels to intermediate frame. Map namesshould match the format ‘BAND/DEVICE/<map name>’. (List, default ['BAND/DEVICE/poly'])

devicePolyOrder#: Order of device polynomial model. (int, default 4)

excludeNonPMObjects#: Exclude reference objects without proper motion/parallax information. (bool, default True)

exposureModel#: List of mappings to apply to transform from intermediate frame to sky coordinates. Map namesshould match the format ‘EXPOSURE/<map name>’. (List, default ['EXPOSURE/poly'])

exposurePolyOrder#: Order of exposure polynomial model. (int, default 6)

fitProperMotion#: Fit the proper motions of the objects. (bool, default False)

fitReserveFraction#: Fraction of objects to reserve from fit for validation. (float, default 0.2)

fitReserveRandomSeed#: Set the random seed for selecting data points to reserve from the fit for validation. (int, default 1234)

healpix#: Run using all visits overlapping a healpix pixel with this order instead of a tract. Order 3 corresponds to pixels with angular size of 7.329 degrees. (int, default None)

matchRadius#: Matching tolerance between associated objects (arcseconds). (float, default 1.0)

minDetectorFraction#: Minimum fraction of detectors with valid WCSs per visit required to include the visit in the fit. (float, default 0.25)

minMatches#: Number of matches required to keep a source object. (int, default 2)

modelComponents#: List of mappings to apply to transform from pixels to sky, in order of their application.Supported options are ‘INSTRUMENT/DEVICE’ and ‘EXPOSURE’. (List, default ['INSTRUMENT/DEVICE', 'EXPOSURE'])

referenceColor#: The color for which DCR is defined as zero. (float, default 0.61)

referenceFilter#: Name of filter to load from reference catalog. This is a required argument, although the valuesreturned are not used. (str, default 'phot_g_mean')

referenceSelector#: How to down-select the loaded astrometry reference catalog. (ConfigurableInstance, default <class 'lsst.meas.algorithms.sourceSelector.ReferenceSourceSelectorConfig'>)

referenceSystematicError#: Systematic error padding added in quadrature for the reference catalog (marcsec). (float, default 0.0)

saveCameraModel#: Save the ‘device’ part of the model to be used as input in future runs. (bool, default False)

saveCameraObject#: Build and output an lsst.afw.cameraGeom.Camera object using the fit per-detector model. (bool, default False)

saveLogOutput#: Flag to enable/disable saving of log output for a task, enabled by default. (bool, default True)

saveModelParams#: Save the parameters and covariance of the WCS model. Default to false because this can be very large. (bool, default False)

setRefEpoch#: Set the reference epoch to a fixed value in MJD (if None, median observation date is used) (float, default None)

sourceFluxType#: Source flux field to use in source selection and to get fluxes from the catalog. (str, default 'apFlux_12_0')

sourceSelector#: How to select sources for cross-matching. (RegistryInstanceDict, default 'science')

systematicError#: Systematic error padding added in quadrature for the science catalogs (marcsec). The defaultvalue is equivalent to 0.02 pixels for HSC. (float, default 0.0034)

useColor#: Use color information to correct for differential chromatic refraction. (bool, default False)

useInputCameraModel#: Use a preexisting model for the ‘device’ part of the model. When true, the device part of the model will be held fixed in the fitting process. (bool, default False)

visitOverlap#: The linkage distance threshold above which clustered groups of visits will not be merged together in an agglomerative clustering algorithm. The linkage distance is calculated using the minimum distance between the field-of-view centers of a given visit and all other visits in a group, and is in units of the field-of-view radius. The resulting groups of visits define the fields for the astrometric fit. (float, default 1.0)