Inheritance diagram for lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask:

Public Member Functions
def	__init__ (self, butler=None, initInputs=None, **kwargs)

def	runDataRef (self, butler)

def	runQuantum (self, butlerQC, inputRefs, outputRefs)

Public Attributes
	fgcmLutMaker

Static Public Attributes
	ConfigClass = FgcmMakeLutConfig

	RunnerClass = FgcmMakeLutRunner

Detailed Description

Make Look-Up Table for FGCM.

This task computes a look-up-table for the range in expected atmosphere
variation and variation in instrumental throughput (as tracked by the
transmission_filter products).  By pre-computing linearized integrals,
the FGCM fit is orders of magnitude faster for stars with a broad range
of colors and observing bands, yielding precision at the 1-2 mmag level.

Computing a LUT requires running MODTRAN or with a pre-generated
atmosphere table packaged with fgcm.

Definition at line 342 of file fgcmMakeLut.py.

Constructor & Destructor Documentation

◆ init()

def lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.__init__	(		self,
			butler = `None`,
			initInputs = `None`,
		**	kwargs
	)

Definition at line 360 of file fgcmMakeLut.py.

     def __init__(self, butler=None, initInputs=None, **kwargs):
         super().__init__(**kwargs)
  

Member Function Documentation

◆ runDataRef()

def lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.runDataRef	(	self,
		butler
	)

Make a Look-Up Table for FGCM

Parameters
----------
butler:  `lsst.daf.persistence.Butler`

Raises
------
ValueError : Raised if configured filter name does not match any of the
    available filter transmission curves.

Definition at line 368 of file fgcmMakeLut.py.

     def runDataRef(self, butler):
         """
         Make a Look-Up Table for FGCM
  
         Parameters
         ----------
         butler:  `lsst.daf.persistence.Butler`
  
         Raises
         ------
         ValueError : Raised if configured filter name does not match any of the
             available filter transmission curves.
         """
         camera = butler.get('camera')
         opticsDataRef = butler.dataRef('transmission_optics')
  
         sensorDataRefDict = {}
         for detector in camera:
             sensorDataRefDict[detector.getId()] = butler.dataRef('transmission_sensor',
                                                                  dataId={'ccd': detector.getId()})
  
         filterDataRefDict = {}
         for physicalFilter in self.config.physicalFilters:
             # The physical filters map directly to dataId filter names
             # for gen2 HSC.  This is the only camera that will be supported
             # by Gen2 fgcmcal, so we do not need to worry about other cases.
             dataRef = butler.dataRef('transmission_filter', filter=physicalFilter)
             if not dataRef.datasetExists():
                 raise ValueError(f"Could not find transmission for filter {physicalFilter}.")
             filterDataRefDict[physicalFilter] = dataRef
  
         lutCat = self._fgcmMakeLut(camera,
                                    opticsDataRef,
                                    sensorDataRefDict,
                                    filterDataRefDict)
         butler.put(lutCat, 'fgcmLookUpTable')
  

◆ runQuantum()

def lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.runQuantum	(	self,
		butlerQC,
		inputRefs,
		outputRefs
	)

Definition at line 405 of file fgcmMakeLut.py.

     def runQuantum(self, butlerQC, inputRefs, outputRefs):
         camera = butlerQC.get(inputRefs.camera)
  
         opticsDataRef = butlerQC.get(inputRefs.transmission_optics)
  
         sensorRefs = butlerQC.get(inputRefs.transmission_sensor)
         sensorDataRefDict = {sensorRef.dataId.byName()['detector']: sensorRef for
                              sensorRef in sensorRefs}
  
         filterRefs = butlerQC.get(inputRefs.transmission_filter)
         filterDataRefDict = {filterRef.dataId['physical_filter']: filterRef for
                              filterRef in filterRefs}
  
         lutCat = self._fgcmMakeLut(camera,
                                    opticsDataRef,
                                    sensorDataRefDict,
                                    filterDataRefDict)
         butlerQC.put(lutCat, outputRefs.fgcmLookUpTable)
  

Member Data Documentation

◆ ConfigClass

lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.ConfigClass = FgcmMakeLutConfig

static

Definition at line 356 of file fgcmMakeLut.py.

◆ fgcmLutMaker

lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.fgcmLutMaker

Definition at line 464 of file fgcmMakeLut.py.

◆ RunnerClass

lsst.fgcmcal.fgcmMakeLut.FgcmMakeLutTask.RunnerClass = FgcmMakeLutRunner

static

Definition at line 357 of file fgcmMakeLut.py.

The documentation for this class was generated from the following file:

/j/snowflake/release/lsstsw/stack/lsst-scipipe-0.7.0/Linux64/fgcmcal/22.0.1-12-g9c3108e+df145f6f68/python/lsst/fgcmcal/fgcmMakeLut.py

Public Member Functions

Public Attributes

Static Public Attributes