Release 28.0.2 (2025-03-25)¶

Source	Identifier
Git tag	28.0.2
EUPS distrib	v28_0_2
rubin-env version	9.0.0

This release is based on the w_2024_42 weekly build with 5 tickets backported.

The notes below highlight significant technical changes to the Science Pipelines codebase in this release. For a complete list of changes made, see Tickets Addressed in Release 28.0.2.

The Characterization Metric Report (DMTR-451) describes the scientific performance of this release in terms of scientific performance metrics.

If you have questions or comments about this release, visit our Community forum for advice.

Major new features
Significant interface changes
Deprecations

See also:

Supported installation method¶

Installation with newinstall.sh is no longer supported. Please use lsstinstall.

Platform compatibility¶

AlmaLinux 9 replaces CentOS 7 as official development, test and operation platform.

Notable middleware improvements¶

Added new Butler interfaces to simplify queries and collection management. See Butler.collections, Butler.query_datasets, Butler.query_data_ids, and Butler.query_dimension_records. The new query_* interface uses a brand new query system that supports region and RA/Dec queries and they all support sorting and limit. It is recommended to migrate away from Butler.registry.query* interfaces.
There have been many improvements to the pipetask report command.

Multiprofit source modelling¶

lsst.multiprofit adds a python interface to the MultiProFit astronomical source modelling code and can be used through lsst.meas.extensions.multiprofit, which implements separate tasks for PSF and source model fitting.

New package analysis_ap¶

Adds scripts and pipelines to compute quality assurance metrics and the ability to make plots for studying the alerts pipeline output products with focus on human-driven analysis of DiaSources and DiaObjects written to the PPDB/APDB; for automatic metric and plot generation on butler outputs during processing runs, see AssocDiaSrcDetectorVisitAnalysisTask and related Tasks and Pipelines in lsst.analysis.tools.

Significant interface changes¶

New packages added¶

analysis_ap (see above).
modelfit_parameters: A library for defining parameters used in fitting parametric models.
gauss2d and gauss2d_fit: Packages for defining and evaluating 2D Gaussian mixtures and images thereof.
multiprofit and meas_extensions_multiprofit (see above).
rucio_register: Command and API to add Butler specific information to Rucio metadata.

Packages removed¶

proxmin and scarlet are obsolete with the adoption of scarlet_lite.

Deprecations¶

Deprecations in lsst.verify
Deprecations in lsst.ip.isr
Deprecations in lsst.obs.chft
Deprecations in lsst.meas.extensions.shapeHSM
Deprecations in lsst.ap.pipe
Deprecations in lsst.pipe.tasks
Deprecations in lsst.ctrl.mpexec
Deprecations in lsst.analysis.tools
Deprecations in lsst.cp.pipe
Deprecations in lsst.skymap
Deprecations in lsst.ip.diffim
Deprecations in lsst.analysis.ap
Deprecations in daf.butler
Deprecated task configurations

These tasks or methods are now deprecated and will be removed in the next major release. See RFC-945 for a clarification on the accelerated deprecation policy.

Deprecations in lsst.verify¶

ConfigApdbLoader is deprecated. Please use apdb_config_url.

Deprecations in lsst.ip.isr¶

isrTask*.makeBinnedImages are no longer used. Please subtask BinExposureTask instead.

Deprecations in lsst.obs.chft¶

CfhtIsrTask.makeBinnedImages is no longer used. Please subtask BinExposureTask instead.

Deprecations in lsst.meas.extensions.shapeHSM¶

The shearType setters are deprecated.

Deprecations in lsst.ap.pipe¶

createApFakes.CreateRandomApFakesTask is replaced by source_injection tasks.

Deprecations in lsst.pipe.tasks¶

The following tasks are replaced by source_injection tasks:

The following unused classes in diff_matched_tract_catalog will be removed:

MeasurementType
Statistic
Median
SigmaIQR
SigmaMAD
Percentile
SourceType
MatchType

In DiffMatchedTractCatalogConfig the attribute compute_stats will be removed.

Deprecations in lsst.ctrl.mpexec¶

pipeline2dot and graph2dot should now be imported from lsst.pipe.base.dot_tools and will be removed.

Deprecations in lsst.analysis.tools¶

TreecorrConfig is no longer a part of analysis_tools (see DM-45899).

Deprecations in lsst.cp.pipe¶

OverscanModel. SimpleModel, SimulatedModel, SegmentSimulator and SegmentSimulator moved to lsst.ip.isr.deferredCharge, and will be removed.

Deprecations in lsst.skymap¶

The functions angToCoord, coordToAnge and classes HealpixTractInfo, HealpixSkyMapConfig, HealpixSkyMap will be removed. getInnerSkyPolygon/inner_sky_polygon are deprecated in favor of inner_sky_region.

Deprecations in lsst.ip.diffim¶

The plugin NativeDipoleCentroid is deprecated.

Deprecations in daf.butler¶

Butler.collections should no longer be used to get the list of default collections. Use Butler.collections.default instead.

Deprecations in lsst.analysis.ap¶

legacyPlotUtils will be removed.

Deprecated task configurations¶

These configurations are deprecated:

AlardLuptonPreconvolveSubtractConfig: badSourceFlags in favor of seeting the equivalent field for the sourceSelector subtask instead.
IsrStatisticsTaskConfig: doApplyGainsForCtiStatistics.
DeferredChargeConfig: useGains.
CharacterizeImageConfig: subtasks doComputeSummaryStats moved to CalibrateTask and doMaskStreaks moved to DetectAndMeasureTask.
DiffMatchedTractCatalogConfig: column_ref_extended, column_ref_extended_inverted, column_ref_extended_inverted, column_target_extended and compute_stats.
CpCtiSolveConfig: useGains.
LinearitySolveConfig: ignorePtcMask.
PhotonTransferCurveExtractConfig: minMeanSignal and maxMeanSignal.
TransformDiaSourceCatalogConfig: doPackFlags.
DiaPipelineConfig: apdb has been replaced by apdb_config_url.
LoadDiaCatalogsConfig: pixelMargin has been replaced by angleMargin, doLoadForcedSources.
FilterDiaSourceCatalogConfig: doWriteTrailedSources. Trailed sources will not be written out during production.

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