BaseCwfsTestCase

class lsst.ts.wep.cwfs.BaseCwfsTestCase

Bases: object

Base class for CWFS tests

Methods Summary

calcWfErr(centroidFindType, fieldXY, ...[, ...])	Calculate the wavefront error.
compareDiffWithTol(wfErr, wfErrAns, tolMax, ...)	Compare the difference between calculated wavefront error and answer with the tolerance.

Methods Documentation

calcWfErr(centroidFindType, fieldXY, camType, algoName, opticalModel, instParams, imageIntra=None, imageExtra=None, imageFileIntra=None, imageFileExtra=None)

Calculate the wavefront error.

Parameters:

centroidFindTypeenum ‘CentroidFindType’

Algorithm to find the centroid of donut.

fieldXYtuple or list

Position of donut on the focal plane in degree (field x, field y).

camTypeenum ‘CamType’

Camera type.

algoNamestr

Algorithm configuration file to solve the Poisson’s equation in the transport of intensity equation (TIE). It can be “fft” or “exp” here.

opticalModelstr

Optical model. It can be “paraxial”, “onAxis”, or “offAxis”.

instParamsdict

Instrument Configuration Parameters to use.

imageIntranumpy.ndarray, optional

Array of intra-focal image. (the default is None.)

imageExtranumpy.ndarray, optional

Array of extra-focal image. (the default is None.)

imageFileIntrastr, optional

Path of intra-focal image file. (the default is None.)

imageFileExtrastr, optional

Path of extra-focal image file. (the default is None.)

Returns:

numpy.ndarray

Zernike polynomials of z4-zn in nm.

compareDiffWithTol(wfErr, wfErrAns, tolMax, tolRms)

Compare the difference between calculated wavefront error and answer with the tolerance.

Parameters:

wfErrnumpy.ndarray

Calculated wavefront error.

wfErrAnsnumpy.ndarray

Answer of wavefront error.

tolMaxfloat

Tolerance of maximum difference of wavefront errors.

tolRmsfloat

Tolerance of difference of root mean square (RMS).