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# Set up aperture photometry | ||
# 'config' should be a SourceMeasurementConfig | ||
|
||
# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
# Use a large aperture to be independent of seeing in calibration | ||
# This config matches obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.plugins["base_CircularApertureFlux"].maxSincRadius = 12.0 |
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""" | ||
DECam-specific overrides for CalibrateTask | ||
""" | ||
|
||
# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
import os.path | ||
|
||
from lsst.meas.algorithms import ColorLimit | ||
from lsst.meas.astrom import MatchOptimisticBConfig | ||
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||
# HACK: Throw away any changes imposed by obs configs, especially plugins. | ||
config = type(config)() | ||
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||
obsConfigDir = os.path.join(os.path.dirname(__file__)) | ||
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# Astrometry/Photometry | ||
# This sets the reference catalog name for Gen2. | ||
for refObjLoader in (config.astromRefObjLoader, | ||
config.photoRefObjLoader, | ||
): | ||
refObjLoader.ref_dataset_name = "ps1_pv3_3pi_20170110" | ||
# Note the u-band results may not be useful without a color term | ||
refObjLoader.filterMap['u'] = 'g' | ||
refObjLoader.filterMap['Y'] = 'y' | ||
refObjLoader.filterMap['N419'] = 'g' | ||
refObjLoader.filterMap['N540'] = 'g' | ||
refObjLoader.filterMap['N708'] = 'i' | ||
refObjLoader.filterMap['N964'] = 'z' | ||
|
||
# This sets up the reference catalog for Gen3. | ||
config.connections.astromRefCat = "ps1_pv3_3pi_20170110" | ||
config.connections.photoRefCat = "ps1_pv3_3pi_20170110" | ||
|
||
# Photometric calibration: use color terms | ||
config.photoCal.applyColorTerms = True | ||
config.photoCal.photoCatName = "ps1_pv3_3pi_20170110" | ||
colors = config.photoCal.match.referenceSelection.colorLimits | ||
# The following two color limits are adopted from obs_subaru for the HSC SSP survey | ||
colors["g-r"] = ColorLimit(primary="g_flux", secondary="r_flux", minimum=0.0) | ||
colors["r-i"] = ColorLimit(primary="r_flux", secondary="i_flux", maximum=0.5) | ||
config.photoCal.match.referenceSelection.doMagLimit = True | ||
config.photoCal.match.referenceSelection.magLimit.fluxField = "i_flux" | ||
config.photoCal.match.referenceSelection.magLimit.maximum = 22.0 | ||
config.photoCal.colorterms.load(os.path.join(obsConfigDir, 'colorterms.py')) | ||
|
||
# Number of bright stars to use. Sets the max number of patterns that can be tested. | ||
# This config matches obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.astrometry.matcher.numBrightStars = 150 | ||
|
||
# The Task default was reduced from 4 to 2 on RFC-577. We believe that 4 is | ||
# more appropriate for use with DECam data until a Jointcal-derived distortion | ||
# model is available (DM-24431); at that point, this override should likely be | ||
# removed. | ||
# See Slack: https://lsstc.slack.com/archives/C2B6X08LS/p1586468459084600 | ||
config.astrometry.wcsFitter.order = 4 | ||
|
||
for matchConfig in (config.astrometry, | ||
): | ||
matchConfig.sourceFluxType = 'Psf' | ||
matchConfig.sourceSelector.active.sourceFluxType = 'Psf' | ||
matchConfig.matcher.maxOffsetPix = 250 | ||
if isinstance(matchConfig.matcher, MatchOptimisticBConfig): | ||
matchConfig.matcher.allowedNonperpDeg = 0.2 | ||
matchConfig.matcher.maxMatchDistArcSec = 2.0 | ||
matchConfig.sourceSelector.active.excludePixelFlags = False | ||
|
||
# Set to match defaults currently used in HSC production runs (e.g. S15B+) | ||
config.catalogCalculation.plugins['base_ClassificationExtendedness'].fluxRatio = 0.95 | ||
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# Demand astrometry and photoCal succeed | ||
config.requireAstrometry = True | ||
config.requirePhotoCal = True | ||
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config.doWriteMatchesDenormalized = True | ||
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# Detection | ||
# This config matches obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.detection.isotropicGrow = True | ||
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||
config.measurement.load(os.path.join(obsConfigDir, "apertures.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "kron.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "hsm.py")) | ||
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# Deblender | ||
# These configs match obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.deblend.maxFootprintSize = 0 | ||
config.deblend.maskLimits["NO_DATA"] = 0.25 # Ignore sources that are in the vignetted region | ||
config.deblend.maxFootprintArea = 10000 | ||
|
||
config.measurement.plugins.names |= ["base_Jacobian", "base_FPPosition"] | ||
config.measurement.plugins["base_Jacobian"].pixelScale = 0.263 |
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""" | ||
DECam-specific overrides for CharacterizeImageTask | ||
""" | ||
|
||
# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
import os.path | ||
|
||
from lsst.meas.astrom import MatchOptimisticBConfig | ||
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# HACK: Throw away any changes imposed by obs configs, especially plugins. | ||
config = type(config)() | ||
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obsConfigDir = os.path.dirname(__file__) | ||
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# Cosmic rays | ||
# These configs match obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.repair.cosmicray.nCrPixelMax = 100000 | ||
config.repair.cosmicray.cond3_fac2 = 0.4 | ||
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# PSF determination | ||
# These configs match obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.measurePsf.reserve.fraction = 0.2 | ||
config.measurePsf.starSelector["objectSize"].sourceFluxField = "base_PsfFlux_instFlux" | ||
config.measurePsf.starSelector["objectSize"].widthMin = 0.9 | ||
config.measurePsf.starSelector["objectSize"].fluxMin = 4000 | ||
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# Astrometry/Photometry | ||
# This sets the reference catalog name for Gen2. | ||
# Note that in Gen3, we've stopped pretending (which is what Gen2 does, | ||
# for backwards compatibility) that charImage uses a reference catalog. | ||
config.refObjLoader.ref_dataset_name = "ps1_pv3_3pi_20170110" | ||
# Note the u-band results may not be useful without a color term | ||
config.refObjLoader.filterMap['u'] = 'g' | ||
config.refObjLoader.filterMap['Y'] = 'y' | ||
config.refObjLoader.filterMap['N419'] = 'g' | ||
config.refObjLoader.filterMap['N540'] = 'g' | ||
config.refObjLoader.filterMap['N708'] = 'i' | ||
config.refObjLoader.filterMap['N964'] = 'z' | ||
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# Set to match defaults currently used in HSC production runs (e.g. S15B) | ||
config.catalogCalculation.plugins['base_ClassificationExtendedness'].fluxRatio = 0.95 | ||
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# Detection | ||
# This config matches obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.detection.isotropicGrow = True | ||
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# Activate calibration of measurements: required for aperture corrections | ||
config.load(os.path.join(obsConfigDir, "cmodel.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "apertures.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "kron.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "convolvedFluxes.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "gaap.py")) | ||
config.measurement.load(os.path.join(obsConfigDir, "hsm.py")) | ||
if "ext_shapeHSM_HsmShapeRegauss" in config.measurement.plugins: | ||
# no deblending has been done | ||
config.measurement.plugins["ext_shapeHSM_HsmShapeRegauss"].deblendNChild = "" | ||
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# Deblender | ||
config.deblend.maskLimits["NO_DATA"] = 0.25 # Ignore sources that are in the vignetted region | ||
config.deblend.maxFootprintArea = 10000 | ||
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config.measurement.plugins.names |= ["base_Jacobian", "base_FPPosition"] | ||
config.measurement.plugins["base_Jacobian"].pixelScale = 0.263 | ||
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# Convolved fluxes can fail for small target seeing if the observation seeing is larger | ||
if "ext_convolved_ConvolvedFlux" in config.measurement.plugins: | ||
names = config.measurement.plugins["ext_convolved_ConvolvedFlux"].getAllResultNames() | ||
config.measureApCorr.allowFailure += names | ||
|
||
if "ext_gaap_GaapFlux" in config.measurement.plugins: | ||
names = config.measurement.plugins["ext_gaap_GaapFlux"].getAllGaapResultNames() | ||
config.measureApCorr.allowFailure += names | ||
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# For aperture correction modeling, only use objects that were used in the | ||
# PSF model and have psf flux signal-to-noise > 200. | ||
# These configs match obs_subaru, to facilitate 1:1 comparisons between DECam and HSC | ||
config.measureApCorr.sourceSelector['science'].doFlags = True | ||
config.measureApCorr.sourceSelector['science'].doUnresolved = False | ||
config.measureApCorr.sourceSelector['science'].doSignalToNoise = True | ||
config.measureApCorr.sourceSelector['science'].flags.good = ["calib_psf_used"] | ||
config.measureApCorr.sourceSelector['science'].flags.bad = [] | ||
config.measureApCorr.sourceSelector['science'].signalToNoise.minimum = 200.0 | ||
config.measureApCorr.sourceSelector['science'].signalToNoise.maximum = None | ||
config.measureApCorr.sourceSelector['science'].signalToNoise.fluxField = "base_PsfFlux_instFlux" | ||
config.measureApCorr.sourceSelector['science'].signalToNoise.errField = "base_PsfFlux_instFluxErr" | ||
config.measureApCorr.sourceSelector.name = "science" | ||
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||
config.ref_match.sourceSelector.name = 'matcher' | ||
for matchConfig in (config.ref_match, | ||
): | ||
matchConfig.sourceFluxType = 'Psf' | ||
matchConfig.sourceSelector.active.sourceFluxType = 'Psf' | ||
matchConfig.matcher.maxOffsetPix = 250 | ||
if isinstance(matchConfig.matcher, MatchOptimisticBConfig): | ||
matchConfig.matcher.allowedNonperpDeg = 0.2 | ||
matchConfig.matcher.maxMatchDistArcSec = 2.0 | ||
matchConfig.sourceSelector.active.excludePixelFlags = False |
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# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
# Enable CModel mags (unsetup meas_modelfit to disable) | ||
# 'config' is a SourceMeasurementConfig. | ||
try: | ||
import lsst.meas.modelfit | ||
config.measurement.plugins.names |= ["modelfit_DoubleShapeletPsfApprox", "modelfit_CModel"] | ||
config.measurement.slots.modelFlux = 'modelfit_CModel' | ||
config.catalogCalculation.plugins['base_ClassificationExtendedness'].fluxRatio = 0.985 | ||
except (KeyError, ImportError): | ||
import logging | ||
logging.getLogger("lsst.obs.decam.config").warning("Cannot import lsst.meas.modelfit:" | ||
" disabling CModel measurements") |
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# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
from lsst.pipe.tasks.colorterms import Colorterm, ColortermDict | ||
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# Average color terms for the DECam filters are calculated using the Pickles stellar spectra atlas. | ||
# The following values are provided by Song Huang (Tsinghua University; dr.guangtou@gmail.com) | ||
# Color terms for u, Y, N419 and N964 bands are not currently available. | ||
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||
# The values for DECam g, r & z-bands are calculated independently and are different to the values at: | ||
# https://www.legacysurvey.org/dr9/description/ | ||
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# A Jupyter notebook to reproduce these values is available at: | ||
# https://github.com/MerianSurvey/caterpillar/blob/main/notebook/photocal/merian_filter_color_terms.ipynb | ||
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# In obs_subaru, colorterms.py is also used in: | ||
# - config/skyAnalysis.py | ||
# - config/compareCoaddAnalysis.py | ||
# - config/coaddAnalysis.py | ||
# - config/visitAnalysis.py | ||
# - config/fgcmBuildStarsTable.py and config/fgcmBuildStars.py | ||
# These files are not currently available for obs_decam. | ||
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||
config.data = { | ||
"decam*": ColortermDict(data={ | ||
'g DECam SDSS c0001 4720.0 1520.0': Colorterm(primary="g", secondary="g"), | ||
'r DECam SDSS c0002 6415.0 1480.0': Colorterm(primary="r", secondary="r"), | ||
'i DECam SDSS c0003 7835.0 1470.0': Colorterm(primary="i", secondary="i"), | ||
'z DECam SDSS c0004 9260.0 1520.0': Colorterm(primary="z", secondary="z"), | ||
}), | ||
"sdss*": ColortermDict(data={ | ||
'g DECam SDSS c0001 4720.0 1520.0': Colorterm(primary="g", secondary="r", c0=-0.008015, c1=-0.089869, c2=-0.018398), # For -1.0 < g-r < 1.8 | ||
'r DECam SDSS c0002 6415.0 1480.0': Colorterm(primary="r", secondary="i", c0=-0.0077434, c1=-0.202615, c2=0.016042), # For -1.0 < r-i < 2.2 | ||
'i DECam SDSS c0003 7835.0 1470.0': Colorterm(primary="i", secondary="z", c0=0.00018887, c1=-0.2748281, c2=-0.029417), # For -1.0 < i-z < 1.2 | ||
'z DECam SDSS c0004 9260.0 1520.0': Colorterm(primary="z", secondary="i", c0=-0.0059858, c1=0.1131192, c2=0.0156471), # For -1.0 < z-i < 0.5 | ||
'N540 DECam c0014 5403.2 210.0': Colorterm(primary="g", secondary="r", c0=-0.03359776, c1=-0.57665033, c2=-0.01510509), # For -1.0 < g-r < 1.5 | ||
'N708 DECam c0012 7080.0 400.0': Colorterm(primary="r", secondary="i", c0=-0.01428724, c1=-0.71755905, c2=0.08959316), # For -1.0 < r-i < 2.0 | ||
}), | ||
"hsc*": ColortermDict(data={ | ||
'g DECam SDSS c0001 4720.0 1520.0': Colorterm(primary="g", secondary="r", c0=0.0000509, c1=-0.0152487, c2=-0.0029937), # For -1.0 < g-r < 1.4 | ||
'r DECam SDSS c0002 6415.0 1480.0': Colorterm(primary="r", secondary="i", c0=-0.0078995, c1=-0.1695323, c2=0.0251978), # For -1.0 < r-i < 2.2 | ||
'i DECam SDSS c0003 7835.0 1470.0': Colorterm(primary="i", secondary="z", c0=0.0010196, c1=-0.1314031, c2=0.0054605), # For -1.0 < i-z < 1.0 | ||
'z DECam SDSS c0004 9260.0 1520.0': Colorterm(primary="z", secondary="y", c0=-0.0013244, c1=-0.2846684, c2=-0.1229817), # For -1.0 < z-y < 0.5 | ||
'N540 DECam c0014 5403.2 210.0': Colorterm(primary="g", secondary="r", c0=-0.03015158, c1=-0.53715834, c2=-0.00202415), # For -1.0 < g-r < 1.5 | ||
'N708 DECam c0012 7080.0 400.0': Colorterm(primary="r", secondary="i", c0=-0.01978413, c1=-0.64368838, c2=0.09132738), # For -1.0 < r-i < 2.0 | ||
}), | ||
"ps1*": ColortermDict(data={ | ||
'g DECam SDSS c0001 4720.0 1520.0': Colorterm(primary="g", secondary="r", c0=0.006388, c1=0.045875, c2=-0.004484), # For -1.0 < g-r < 1.2 | ||
'r DECam SDSS c0002 6415.0 1480.0': Colorterm(primary="r", secondary="i", c0=-0.006775, c1=-0.187304, c2=0.018928), # For -1.0 < r-i < 2.2 | ||
'i DECam SDSS c0003 7835.0 1470.0': Colorterm(primary="i", secondary="z", c0=0.0012204, c1=-0.282956, c2=-0.011321), # For -1.0 < i-z < 1.4 | ||
'z DECam SDSS c0004 9260.0 1520.0': Colorterm(primary="z", secondary="y", c0=-0.0087868, c1=-0.5204795, c2=-0.057955), # For -1.0 < z-y < 1.0 | ||
'N540 DECam c0014 5403.2 210.0': Colorterm(primary="g", secondary="r", c0=-0.02635164, c1=-0.50968428, c2=-0.00958104), # For -1.0 < g-r < 1.5 | ||
'N708 DECam c0012 7080.0 400.0': Colorterm(primary="r", secondary="i", c0=-0.01508987, c1=-0.69377675, c2=0.09079348), # For -1.0 < r-i < 2.0 | ||
}), | ||
} |
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# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
# Enable measurement of convolved fluxes | ||
# 'config' is a SourceMeasurementConfig | ||
try: | ||
import lsst.meas.extensions.convolved # noqa: Load flux.convolved algorithm | ||
except ImportError as exc: | ||
import logging | ||
logging.getLogger("lsst.obs.decam.config").warning("Cannot import lsst.meas.extensions.convolved (%s):" | ||
" disabling convolved flux measurements", exc) | ||
else: | ||
config.plugins.names.add("ext_convolved_ConvolvedFlux") | ||
config.plugins["ext_convolved_ConvolvedFlux"].seeing.append(8.0) |
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# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
# Enable GAaP (Gaussian Aperture and PSF) colors | ||
# 'config' is typically a SourceMeasurementConfig | ||
try: | ||
import lsst.meas.extensions.gaap # noqa | ||
config.plugins.names.add("ext_gaap_GaapFlux") | ||
config.plugins["ext_gaap_GaapFlux"].sigmas = [0.5, 0.7, 1.0, 1.5, 2.5, 3.0] | ||
# Enable PSF photometry after PSF-Gaussianization in the `ext_gaap_GaapFlux` plugin | ||
config.plugins["ext_gaap_GaapFlux"].doPsfPhotometry = True | ||
except ImportError as exc: | ||
import logging | ||
logging.getLogger("lsst.obs.decam.config").warning("Cannot import lsst.meas.extensions.gaap (%s):" | ||
" disabling GAaP flux measurements", exc) |
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# Enable HSM shapes (unsetup meas_extensions_shapeHSM to disable) | ||
# 'config' is a SourceMeasurementConfig. | ||
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||
# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
import os.path | ||
from lsst.utils import getPackageDir | ||
|
||
try: | ||
config.load(os.path.join(getPackageDir("meas_extensions_shapeHSM"), "config", "enable.py")) | ||
config.plugins["ext_shapeHSM_HsmShapeRegauss"].deblendNChild = "deblend_nChild" | ||
# Enable debiased moments | ||
config.plugins.names |= ["ext_shapeHSM_HsmPsfMomentsDebiased"] | ||
except LookupError as e: | ||
print("Cannot enable shapeHSM (%s): disabling HSM shape measurements" % (e,)) |
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# Enable Kron mags | ||
# 'config' is a SourceMeasurementConfig | ||
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||
# This file was copied from obs_decam as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
try: | ||
import lsst.meas.extensions.photometryKron | ||
config.plugins.names |= ["ext_photometryKron_KronFlux"] | ||
except ImportError: | ||
import logging | ||
logging.getLogger("lsst.obs.decam.config").warning("Cannot import lsst.meas.extensions.photometryKron:" | ||
" disabling Kron measurements") |
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# Set up aperture photometry | ||
# 'config' should be a SourceMeasurementConfig | ||
|
||
# This file was copied from obs_subaru as part of DM-31063. Feel free to modify | ||
# this file to better reflect the needs of AP; however, when it comes time to | ||
# permanently remove the obs_* configs, we should check that none of the | ||
# changes made there since April 12, 2022 would be useful here. | ||
|
||
config.plugins.names |= ["base_CircularApertureFlux"] | ||
# Roughly (1.0, 1.5, 2.0, 3.0, 4.0, 5.7, 8.4, 11.8, 16.8, 23.5 arcsec) in diameter: 2**(0.5*i) | ||
# (assuming plate scale of 0.168 arcsec pixels) | ||
config.plugins["base_CircularApertureFlux"].radii = [3.0, 4.5, 6.0, 9.0, 12.0, 17.0, 25.0, 35.0, 50.0, 70.0] | ||
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# Use a large aperture to be independent of seeing in calibration | ||
config.plugins["base_CircularApertureFlux"].maxSincRadius = 12.0 |
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