def testReferenceFilter(self):
"""Test sub-selecting reference objects by flux."""
sourceCat = self.loadSourceCatalog(self.filename)
refCat = self.computePosRefCatalog(sourceCat)
# Apply source selector to sourceCat, using the astrometry config defaults
tempConfig = measAstrom.AstrometryTask.ConfigClass()
tempSolver = measAstrom.AstrometryTask(config=tempConfig,
refObjLoader=None)
sourceSelection = tempSolver.sourceSelector.run(sourceCat)
distortedCat = distort.distortList(sourceSelection.sourceCat,
distort.linearXDistort)
matchPessConfig = measAstrom.MatchPessimisticBTask.ConfigClass()
matchPessConfig.maxRefObjects = 150
matchPessConfig.minMatchDistPixels = 5.0
matchPess = measAstrom.MatchPessimisticBTask(config=matchPessConfig)
trimmedRefCat = matchPess._filterRefCat(refCat, 'r_flux')
self.assertEqual(len(trimmedRefCat), matchPessConfig.maxRefObjects)
matchRes = matchPess.matchObjectsToSources(
refCat=refCat,
sourceCat=distortedCat,
wcs=self.distortedWcs,
sourceFluxField='slot_ApFlux_instFlux',
refFluxField="r_flux",
)
self.assertEqual(len(matchRes.matches),
matchPessConfig.maxRefObjects - 3)
def getAstrometrySolution(self, loglvl=Log.INFO):
astromConfig = measAstrom.AstrometryTask.ConfigClass()
astrom = measAstrom.AstrometryTask(config=astromConfig)
# use solve instead of run because the exposure has the wrong bbox
return astrom.solve(
sourceCat=self.srcCat,
exposure=self.exposure,
)
def testPassingMatcherState(self):
"""Test that results of the matcher can be propagated to to in
subsequent iterations.
"""
sourceCat = self.loadSourceCatalog(self.filename)
refCat = self.computePosRefCatalog(sourceCat)
# Apply source selector to sourceCat, using the astrometry config defaults
tempConfig = measAstrom.AstrometryTask.ConfigClass()
tempSolver = measAstrom.AstrometryTask(config=tempConfig,
refObjLoader=None)
sourceSelection = tempSolver.sourceSelector.run(sourceCat)
distortedCat = distort.distortList(sourceSelection.sourceCat,
distort.linearXDistort)
sourceCat = distortedCat
matchRes = self.MatchPessimisticB.matchObjectsToSources(
refCat=refCat,
sourceCat=sourceCat,
wcs=self.distortedWcs,
sourceFluxField='slot_ApFlux_instFlux',
refFluxField="r_flux",
)
maxShift = matchRes.match_tolerance.maxShift * 300
# Force the matcher to use a different pattern thatn the previous
# "iteration".
matchTol = measAstrom.MatchTolerancePessimistic(
maxMatchDist=matchRes.match_tolerance.maxMatchDist,
autoMaxMatchDist=matchRes.match_tolerance.autoMaxMatchDist,
maxShift=maxShift,
lastMatchedPattern=0,
failedPatternList=[0],
PPMbObj=matchRes.match_tolerance.PPMbObj,
)
matchRes = self.MatchPessimisticB.matchObjectsToSources(
refCat=refCat,
sourceCat=sourceCat,
wcs=self.distortedWcs,
sourceFluxField='slot_ApFlux_instFlux',
refFluxField="r_flux",
match_tolerance=matchTol,
)
self.assertEqual(len(matchRes.matches), self.expectedMatches)
self.assertLess(matchRes.match_tolerance.maxShift, maxShift)
self.assertEqual(matchRes.match_tolerance.lastMatchedPattern, 1)
self.assertIsNotNone(matchRes.match_tolerance.maxMatchDist)
self.assertIsNotNone(matchRes.match_tolerance.autoMaxMatchDist)
self.assertIsNotNone(matchRes.match_tolerance.lastMatchedPattern)
self.assertIsNotNone(matchRes.match_tolerance.failedPatternList)
self.assertIsNotNone(matchRes.match_tolerance.PPMbObj)
def singleTestInstance(self, filename, distortFunc, doPlot=False):
sourceCat = self.loadSourceCatalog(self.filename)
refCat = self.computePosRefCatalog(sourceCat)
# Apply source selector to sourceCat, using the astrometry config defaults
tempConfig = measAstrom.AstrometryTask.ConfigClass()
tempConfig.matcher.retarget(measAstrom.MatchOptimisticBTask)
tempConfig.sourceSelector["matcher"].excludePixelFlags = False
tempSolver = measAstrom.AstrometryTask(config=tempConfig,
refObjLoader=None)
sourceSelection = tempSolver.sourceSelector.run(sourceCat)
distortedCat = distort.distortList(sourceSelection.sourceCat,
distortFunc)
if doPlot:
import matplotlib.pyplot as plt
undistorted = [
self.wcs.skyToPixel(
self.distortedWcs.pixelToSky(ss.getCentroid()))
for ss in distortedCat
]
refs = [self.wcs.skyToPixel(ss.getCoord()) for ss in refCat]
def plot(catalog, symbol):
plt.plot([ss.getX() for ss in catalog],
[ss.getY() for ss in catalog], symbol)
# plot(sourceCat, 'k+') # Original positions: black +
plot(distortedCat, 'b+') # Distorted positions: blue +
plot(undistorted, 'g+') # Undistorted positions: green +
plot(refs, 'rx') # Reference catalog: red x
# The green + should overlap with the red x, because that's how matchOptimisticB does it.
# The black + happens to overlap with those also, but that's beside the point.
plt.show()
sourceCat = distortedCat
matchRes = self.matchOptimisticB.matchObjectsToSources(
refCat=refCat,
sourceCat=sourceCat,
wcs=self.distortedWcs,
sourceFluxField='slot_ApFlux_instFlux',
refFluxField="r_flux",
)
matches = matchRes.matches
if doPlot:
measAstrom.plotAstrometry(matches=matches,
refCat=refCat,
sourceCat=sourceCat)
self.assertEqual(len(matches), 183)
refCoordKey = afwTable.CoordKey(refCat.schema["coord"])
srcCoordKey = afwTable.CoordKey(sourceCat.schema["coord"])
refCentroidKey = afwTable.Point2DKey(refCat.getSchema()["centroid"])
maxDistErr = 0 * lsst.geom.radians
for refObj, source, distRad in matches:
sourceCoord = source.get(srcCoordKey)
refCoord = refObj.get(refCoordKey)
predDist = sourceCoord.separation(refCoord)
distErr = abs(predDist - distRad * lsst.geom.radians)
maxDistErr = max(distErr, maxDistErr)
if refObj.getId() != source.getId():
refCentroid = refObj.get(refCentroidKey)
sourceCentroid = source.getCentroid()
radius = math.hypot(*(refCentroid - sourceCentroid))
self.fail(
"ID mismatch: %s at %s != %s at %s; error = %0.1f pix" %
(refObj.getId(), refCentroid, source.getId(),
sourceCentroid, radius))
self.assertLess(maxDistErr.asArcseconds(), 1e-7)
def run(self, sensorRef, templateIdList=None):
"""Subtract an image from a template coadd and measure the result
Steps include:
- warp template coadd to match WCS of image
- PSF match image to warped template
- subtract image from PSF-matched, warped template
- persist difference image
- detect sources
- measure sources
@param sensorRef: sensor-level butler data reference, used for the following data products:
Input only:
- calexp
- psf
- ccdExposureId
- ccdExposureId_bits
- self.config.coaddName + "Coadd_skyMap"
- self.config.coaddName + "Coadd"
Input or output, depending on config:
- self.config.coaddName + "Diff_subtractedExp"
Output, depending on config:
- self.config.coaddName + "Diff_matchedExp"
- self.config.coaddName + "Diff_src"
@return pipe_base Struct containing these fields:
- subtractedExposure: exposure after subtracting template;
the unpersisted version if subtraction not run but detection run
None if neither subtraction nor detection run (i.e. nothing useful done)
- subtractRes: results of subtraction task; None if subtraction not run
- sources: detected and possibly measured sources; None if detection not run
"""
self.log.info("Processing %s" % (sensorRef.dataId))
# initialize outputs and some intermediate products
subtractedExposure = None
subtractRes = None
selectSources = None
kernelSources = None
controlSources = None
diaSources = None
# We make one IdFactory that will be used by both icSrc and src datasets;
# I don't know if this is the way we ultimately want to do things, but at least
# this ensures the source IDs are fully unique.
expBits = sensorRef.get("ccdExposureId_bits")
expId = long(sensorRef.get("ccdExposureId"))
idFactory = afwTable.IdFactory.makeSource(expId, 64 - expBits)
# Retrieve the science image we wish to analyze
exposure = sensorRef.get("calexp", immediate=True)
if self.config.doAddCalexpBackground:
mi = exposure.getMaskedImage()
mi += sensorRef.get("calexpBackground").getImage()
if not exposure.hasPsf():
raise pipeBase.TaskError("Exposure has no psf")
sciencePsf = exposure.getPsf()
subtractedExposureName = self.config.coaddName + "Diff_differenceExp"
templateExposure = None # Stitched coadd exposure
templateSources = None # Sources on the template image
if self.config.doSubtract:
template = self.getTemplate.run(exposure,
sensorRef,
templateIdList=templateIdList)
templateExposure = template.exposure
templateSources = template.sources
# compute scienceSigmaOrig: sigma of PSF of science image before pre-convolution
ctr = afwGeom.Box2D(exposure.getBBox()).getCenter()
psfAttr = PsfAttributes(sciencePsf, afwGeom.Point2I(ctr))
scienceSigmaOrig = psfAttr.computeGaussianWidth(
psfAttr.ADAPTIVE_MOMENT)
# sigma of PSF of template image before warping
ctr = afwGeom.Box2D(templateExposure.getBBox()).getCenter()
psfAttr = PsfAttributes(templateExposure.getPsf(),
afwGeom.Point2I(ctr))
templateSigma = psfAttr.computeGaussianWidth(
psfAttr.ADAPTIVE_MOMENT)
# if requested, convolve the science exposure with its PSF
# (properly, this should be a cross-correlation, but our code does not yet support that)
# compute scienceSigmaPost: sigma of science exposure with pre-convolution, if done,
# else sigma of original science exposure
if self.config.doPreConvolve:
convControl = afwMath.ConvolutionControl()
# cannot convolve in place, so make a new MI to receive convolved image
srcMI = exposure.getMaskedImage()
destMI = srcMI.Factory(srcMI.getDimensions())
srcPsf = sciencePsf
if self.config.useGaussianForPreConvolution:
# convolve with a simplified PSF model: a double Gaussian
kWidth, kHeight = sciencePsf.getLocalKernel(
).getDimensions()
preConvPsf = SingleGaussianPsf(kWidth, kHeight,
scienceSigmaOrig)
else:
# convolve with science exposure's PSF model
preConvPsf = srcPsf
afwMath.convolve(destMI, srcMI, preConvPsf.getLocalKernel(),
convControl)
exposure.setMaskedImage(destMI)
scienceSigmaPost = scienceSigmaOrig * math.sqrt(2)
else:
scienceSigmaPost = scienceSigmaOrig
# If requested, find sources in the image
if self.config.doSelectSources:
if not sensorRef.datasetExists("src"):
self.log.warn(
"Src product does not exist; running detection, measurement, selection"
)
# Run own detection and measurement; necessary in nightly processing
selectSources = self.subtract.getSelectSources(
exposure,
sigma=scienceSigmaPost,
doSmooth=not self.doPreConvolve,
idFactory=idFactory,
)
else:
self.log.info("Source selection via src product")
# Sources already exist; for data release processing
selectSources = sensorRef.get("src")
# Number of basis functions
nparam = len(
makeKernelBasisList(
self.subtract.config.kernel.active,
referenceFwhmPix=scienceSigmaPost * FwhmPerSigma,
targetFwhmPix=templateSigma * FwhmPerSigma))
if self.config.doAddMetrics:
# Modify the schema of all Sources
kcQa = KernelCandidateQa(nparam)
selectSources = kcQa.addToSchema(selectSources)
if self.config.kernelSourcesFromRef:
# match exposure sources to reference catalog
astromRet = self.astrometer.loadAndMatch(
exposure=exposure, sourceCat=selectSources)
matches = astromRet.matches
elif templateSources:
# match exposure sources to template sources
matches = afwTable.matchRaDec(templateSources,
selectSources,
1.0 * afwGeom.arcseconds,
False)
else:
raise RuntimeError(
"doSelectSources=True and kernelSourcesFromRef=False,"
+
"but template sources not available. Cannot match science "
+
"sources with template sources. Run process* on data from "
+ "which templates are built.")
kernelSources = self.sourceSelector.selectStars(
exposure, selectSources, matches=matches).starCat
random.shuffle(kernelSources, random.random)
controlSources = kernelSources[::self.config.controlStepSize]
kernelSources = [
k for i, k in enumerate(kernelSources)
if i % self.config.controlStepSize
]
if self.config.doSelectDcrCatalog:
redSelector = DiaCatalogSourceSelectorTask(
DiaCatalogSourceSelectorConfig(
grMin=self.sourceSelector.config.grMax,
grMax=99.999))
redSources = redSelector.selectStars(
exposure, selectSources, matches=matches).starCat
controlSources.extend(redSources)
blueSelector = DiaCatalogSourceSelectorTask(
DiaCatalogSourceSelectorConfig(
grMin=-99.999,
grMax=self.sourceSelector.config.grMin))
blueSources = blueSelector.selectStars(
exposure, selectSources, matches=matches).starCat
controlSources.extend(blueSources)
if self.config.doSelectVariableCatalog:
varSelector = DiaCatalogSourceSelectorTask(
DiaCatalogSourceSelectorConfig(includeVariable=True))
varSources = varSelector.selectStars(
exposure, selectSources, matches=matches).starCat
controlSources.extend(varSources)
self.log.info(
"Selected %d / %d sources for Psf matching (%d for control sample)"
% (len(kernelSources), len(selectSources),
len(controlSources)))
allresids = {}
if self.config.doUseRegister:
self.log.info("Registering images")
if templateSources is None:
# Run detection on the template, which is
# temporarily background-subtracted
templateSources = self.subtract.getSelectSources(
templateExposure,
sigma=templateSigma,
doSmooth=True,
idFactory=idFactory)
# Third step: we need to fit the relative astrometry.
#
wcsResults = self.fitAstrometry(templateSources,
templateExposure,
selectSources)
warpedExp = self.register.warpExposure(templateExposure,
wcsResults.wcs,
exposure.getWcs(),
exposure.getBBox())
templateExposure = warpedExp
# Create debugging outputs on the astrometric
# residuals as a function of position. Persistence
# not yet implemented; expected on (I believe) #2636.
if self.config.doDebugRegister:
# Grab matches to reference catalog
srcToMatch = {x.second.getId(): x.first for x in matches}
refCoordKey = wcsResults.matches[0].first.getTable(
).getCoordKey()
inCentroidKey = wcsResults.matches[0].second.getTable(
).getCentroidKey()
sids = [m.first.getId() for m in wcsResults.matches]
positions = [
m.first.get(refCoordKey) for m in wcsResults.matches
]
residuals = [
m.first.get(refCoordKey).getOffsetFrom(
wcsResults.wcs.pixelToSky(
m.second.get(inCentroidKey)))
for m in wcsResults.matches
]
allresids = dict(zip(sids, zip(positions, residuals)))
cresiduals = [
m.first.get(refCoordKey).getTangentPlaneOffset(
wcsResults.wcs.pixelToSky(
m.second.get(inCentroidKey)))
for m in wcsResults.matches
]
colors = numpy.array([
-2.5 * numpy.log10(srcToMatch[x].get("g")) +
2.5 * numpy.log10(srcToMatch[x].get("r")) for x in sids
if x in srcToMatch.keys()
])
dlong = numpy.array([
r[0].asArcseconds() for s, r in zip(sids, cresiduals)
if s in srcToMatch.keys()
])
dlat = numpy.array([
r[1].asArcseconds() for s, r in zip(sids, cresiduals)
if s in srcToMatch.keys()
])
idx1 = numpy.where(
colors < self.sourceSelector.config.grMin)
idx2 = numpy.where(
(colors >= self.sourceSelector.config.grMin)
& (colors <= self.sourceSelector.config.grMax))
idx3 = numpy.where(
colors > self.sourceSelector.config.grMax)
rms1Long = IqrToSigma * (numpy.percentile(
dlong[idx1], 75) - numpy.percentile(dlong[idx1], 25))
rms1Lat = IqrToSigma * (numpy.percentile(dlat[idx1], 75) -
numpy.percentile(dlat[idx1], 25))
rms2Long = IqrToSigma * (numpy.percentile(
dlong[idx2], 75) - numpy.percentile(dlong[idx2], 25))
rms2Lat = IqrToSigma * (numpy.percentile(dlat[idx2], 75) -
numpy.percentile(dlat[idx2], 25))
rms3Long = IqrToSigma * (numpy.percentile(
dlong[idx3], 75) - numpy.percentile(dlong[idx3], 25))
rms3Lat = IqrToSigma * (numpy.percentile(dlat[idx3], 75) -
numpy.percentile(dlat[idx3], 25))
self.log.info("Blue star offsets'': %.3f %.3f, %.3f %.3f" %
(numpy.median(dlong[idx1]), rms1Long,
numpy.median(dlat[idx1]), rms1Lat))
self.log.info(
"Green star offsets'': %.3f %.3f, %.3f %.3f" %
(numpy.median(dlong[idx2]), rms2Long,
numpy.median(dlat[idx2]), rms2Lat))
self.log.info("Red star offsets'': %.3f %.3f, %.3f %.3f" %
(numpy.median(dlong[idx3]), rms3Long,
numpy.median(dlat[idx3]), rms3Lat))
self.metadata.add("RegisterBlueLongOffsetMedian",
numpy.median(dlong[idx1]))
self.metadata.add("RegisterGreenLongOffsetMedian",
numpy.median(dlong[idx2]))
self.metadata.add("RegisterRedLongOffsetMedian",
numpy.median(dlong[idx3]))
self.metadata.add("RegisterBlueLongOffsetStd", rms1Long)
self.metadata.add("RegisterGreenLongOffsetStd", rms2Long)
self.metadata.add("RegisterRedLongOffsetStd", rms3Long)
self.metadata.add("RegisterBlueLatOffsetMedian",
numpy.median(dlat[idx1]))
self.metadata.add("RegisterGreenLatOffsetMedian",
numpy.median(dlat[idx2]))
self.metadata.add("RegisterRedLatOffsetMedian",
numpy.median(dlat[idx3]))
self.metadata.add("RegisterBlueLatOffsetStd", rms1Lat)
self.metadata.add("RegisterGreenLatOffsetStd", rms2Lat)
self.metadata.add("RegisterRedLatOffsetStd", rms3Lat)
# warp template exposure to match exposure,
# PSF match template exposure to exposure,
# then return the difference
#Return warped template... Construct sourceKernelCand list after subtract
self.log.info("Subtracting images")
subtractRes = self.subtract.subtractExposures(
templateExposure=templateExposure,
scienceExposure=exposure,
candidateList=kernelSources,
convolveTemplate=self.config.convolveTemplate,
doWarping=not self.config.doUseRegister)
subtractedExposure = subtractRes.subtractedExposure
if self.config.doWriteMatchedExp:
sensorRef.put(subtractRes.matchedExposure,
self.config.coaddName + "Diff_matchedExp")
if self.config.doDetection:
self.log.info("Computing diffim PSF")
if subtractedExposure is None:
subtractedExposure = sensorRef.get(subtractedExposureName)
# Get Psf from the appropriate input image if it doesn't exist
if not subtractedExposure.hasPsf():
if self.config.convolveTemplate:
subtractedExposure.setPsf(exposure.getPsf())
else:
if templateExposure is None:
template = self.getTemplate.run(
exposure, sensorRef, templateIdList=templateIdList)
subtractedExposure.setPsf(template.exposure.getPsf())
# If doSubtract is False, then subtractedExposure was fetched from disk (above), thus it may have
# already been decorrelated. Thus, we do not do decorrelation if doSubtract is False.
if self.config.doDecorrelation and self.config.doSubtract:
decorrResult = self.decorrelate.run(exposure, templateExposure,
subtractedExposure,
subtractRes.psfMatchingKernel)
subtractedExposure = decorrResult.correctedExposure
if self.config.doDetection:
self.log.info("Running diaSource detection")
# Erase existing detection mask planes
mask = subtractedExposure.getMaskedImage().getMask()
mask &= ~(mask.getPlaneBitMask("DETECTED")
| mask.getPlaneBitMask("DETECTED_NEGATIVE"))
table = afwTable.SourceTable.make(self.schema, idFactory)
table.setMetadata(self.algMetadata)
results = self.detection.makeSourceCatalog(
table=table,
exposure=subtractedExposure,
doSmooth=not self.config.doPreConvolve)
if self.config.doMerge:
fpSet = results.fpSets.positive
fpSet.merge(results.fpSets.negative, self.config.growFootprint,
self.config.growFootprint, False)
diaSources = afwTable.SourceCatalog(table)
fpSet.makeSources(diaSources)
self.log.info("Merging detections into %d sources" %
(len(diaSources)))
else:
diaSources = results.sources
if self.config.doMeasurement:
self.log.info("Running diaSource measurement")
if not self.config.doDipoleFitting:
self.measurement.run(diaSources, subtractedExposure)
else:
if self.config.doSubtract:
self.measurement.run(diaSources, subtractedExposure,
exposure,
subtractRes.matchedExposure)
else:
self.measurement.run(diaSources, subtractedExposure,
exposure)
# Match with the calexp sources if possible
if self.config.doMatchSources:
if sensorRef.datasetExists("src"):
# Create key,val pair where key=diaSourceId and val=sourceId
matchRadAsec = self.config.diaSourceMatchRadius
matchRadPixel = matchRadAsec / exposure.getWcs(
).pixelScale().asArcseconds()
srcMatches = afwTable.matchXy(sensorRef.get("src"),
diaSources, matchRadPixel,
True)
srcMatchDict = dict([(srcMatch.second.getId(),
srcMatch.first.getId())
for srcMatch in srcMatches])
self.log.info("Matched %d / %d diaSources to sources" %
(len(srcMatchDict), len(diaSources)))
else:
self.log.warn(
"Src product does not exist; cannot match with diaSources"
)
srcMatchDict = {}
# Create key,val pair where key=diaSourceId and val=refId
refAstromConfig = measAstrom.AstrometryConfig()
refAstromConfig.matcher.maxMatchDistArcSec = matchRadAsec
refAstrometer = measAstrom.AstrometryTask(refAstromConfig)
astromRet = refAstrometer.run(exposure=exposure,
sourceCat=diaSources)
refMatches = astromRet.matches
if refMatches is None:
self.log.warn(
"No diaSource matches with reference catalog")
refMatchDict = {}
else:
self.log.info(
"Matched %d / %d diaSources to reference catalog" %
(len(refMatches), len(diaSources)))
refMatchDict = dict([(refMatch.second.getId(), refMatch.first.getId()) for \
refMatch in refMatches])
# Assign source Ids
for diaSource in diaSources:
sid = diaSource.getId()
if srcMatchDict.has_key(sid):
diaSource.set("srcMatchId", srcMatchDict[sid])
if refMatchDict.has_key(sid):
diaSource.set("refMatchId", refMatchDict[sid])
if diaSources is not None and self.config.doWriteSources:
sensorRef.put(diaSources,
self.config.coaddName + "Diff_diaSrc")
if self.config.doAddMetrics and self.config.doSelectSources:
self.log.info("Evaluating metrics and control sample")
kernelCandList = []
for cell in subtractRes.kernelCellSet.getCellList():
for cand in cell.begin(False): # include bad candidates
kernelCandList.append(cast_KernelCandidateF(cand))
# Get basis list to build control sample kernels
basisList = afwMath.cast_LinearCombinationKernel(
kernelCandList[0].getKernel(
KernelCandidateF.ORIG)).getKernelList()
controlCandList = \
diffimTools.sourceTableToCandidateList(controlSources,
subtractRes.warpedExposure, exposure,
self.config.subtract.kernel.active,
self.config.subtract.kernel.active.detectionConfig,
self.log, doBuild=True, basisList=basisList)
kcQa.apply(kernelCandList,
subtractRes.psfMatchingKernel,
subtractRes.backgroundModel,
dof=nparam)
kcQa.apply(controlCandList, subtractRes.psfMatchingKernel,
subtractRes.backgroundModel)
if self.config.doDetection:
kcQa.aggregate(selectSources, self.metadata, allresids,
diaSources)
else:
kcQa.aggregate(selectSources, self.metadata, allresids)
sensorRef.put(selectSources,
self.config.coaddName + "Diff_kernelSrc")
if self.config.doWriteSubtractedExp:
sensorRef.put(subtractedExposure, subtractedExposureName)
self.runDebug(exposure, subtractRes, selectSources, kernelSources,
diaSources)
return pipeBase.Struct(
subtractedExposure=subtractedExposure,
subtractRes=subtractRes,
sources=diaSources,
)