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DM-40301: Update configurations to use large 35 pixel aperture for LATISS calibration. #466

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Aug 16, 2023
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DM-40301: Update configurations to use large 35 pixel aperture for LATISS calibration. #466

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4 changes: 4 additions & 0 deletions config/latiss/calibrate.py
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Original file line number Diff line number Diff line change
Expand Up @@ -42,3 +42,7 @@
config.doWriteMatchesDenormalized = True

config.measurement.plugins["base_Jacobian"].pixelScale = 0.1

# Set the default aperture as appropriate for the LATISS plate scale.
config.measurement.slots.apFlux='base_CircularApertureFlux_35_0'
config.measurement.slots.calibFlux='base_CircularApertureFlux_35_0'
6 changes: 5 additions & 1 deletion config/latiss/characterizeImage.py
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Expand Up @@ -20,11 +20,15 @@
config.measurePsf.psfDeterminer["psfex"].spatialOrder = 1

config.installSimplePsf.width = 21
config.installSimplePsf.fwhm = 2.355*2 # LATISS platescale is 2x LSST nominal
config.installSimplePsf.fwhm = 2.355*2 # LATISS plate scale is 2x LSST nominal

# Turn off S/N cut for aperture correction measurement source selection
# (it now only includes calib_psf_used objects, and that cut is "good
# enough" for the shallow LATISS data).
config.measureApCorr.sourceSelector["science"].doSignalToNoise = False

config.measurement.plugins["base_Jacobian"].pixelScale = 0.1

# Set the default aperture as appropriate for the LATISS plate scale.
config.measurement.slots.apFlux='base_CircularApertureFlux_35_0'
config.measurement.slots.calibFlux='base_CircularApertureFlux_35_0'
27 changes: 27 additions & 0 deletions config/latiss/isolatedStarAssociation.py
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@@ -0,0 +1,27 @@
# Override calibration apertures as appropriate for LATISS plate scale.
config.inst_flux_field='apFlux_35_0_instFlux'

config.extra_columns = [
'x',
'y',
'apFlux_50_0_instFlux',
'apFlux_50_0_instFluxErr',
'apFlux_50_0_flag',
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Why 50 here?

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For testing background offsets, fgcm uses the calibration aperture plus 1 larger. 50 is that one larger. (And the calibration flux already gets transferred, this is just the "extra" bit.)

'localBackground_instFlux',
'localBackground_flag',
]

config.source_selector['science'].flags.bad = [
'pixelFlags_edge',
'pixelFlags_interpolatedCenter',
'pixelFlags_saturatedCenter',
'pixelFlags_crCenter',
'pixelFlags_bad',
'pixelFlags_interpolated',
'pixelFlags_saturated',
'centroid_flag',
'apFlux_35_0_flag',
]

config.source_selector['science'].signalToNoise.fluxField = 'apFlux_35_0_instFlux'
config.source_selector['science'].signalToNoise.errField = 'apFlux_35_0_instFluxErr'