astrowisp.tests.fitpsf.noiseless_tests module

Class Inheritance Diagram

Create noiseless FITS files to test various tools on.

class astrowisp.tests.fitpsf.noiseless_tests.TestPiecewiseBicubicNoiseless(methodName='runTest')

Bases: TestCase

Test piecewise bicubic PSF fitting on noiseless images.

check_results(psf_fit_fname, sources, extra_variables)

Assert that fitted PSF map evaluates to expected PSFs for sources.

Parameters:

• psf_fit_fname – The name of the file produced by fitpsf to check the PSF map of.

• sources – The sources argument used to generate the image that was fit. See same name argument of run_test.

• extra_variables – A list of the names of any variables in addition to x and y which participate in the PSF fit.

Returns:

None

fitpsf_executable = '/home/kpenev/projects/git/AstroWISP/PythonPackage/build/exe/fitpsf/debug/fitpsf'

run_test(sources, psffit_terms, extra_variables=None)

Assert that a fit of a series of images works exactly.

Parameters:

• sources –

  A list of lists of dictionaries specifying the list of sources to fit. Each list of dictionaries specifies the sources to drop on a single image. Each source must contain the following:

  • x: The x coordinate of the source center.

  • y: The y coordinate of the source center.

  • psf_args: The arguments with which to create the PiecewiseBicubicPSF for the source. See PiecewiseBicubicPSF.__init__ for details.

• psffit_terms – The terms on which PSF parameters depend on. See –psf.terms argument of the fitpsf command.

• extra_variables – A list of the variables in addition to x and y that participate in the fitting terms.

Returns:

None

test_four_overlapping_sources()

Test fitting an image containing 4 overlapping sources.

test_isolated_sources()

Test fitting an image containing 8 well isolated sources.

test_multi_image_with_extra_var()

Test fitting a series of 5 images and non-position variables.

test_single_source()

Test fitting a single source in the center of the image.

test_two_overlapping_sources()

Test fitting an image containing 2 sources all overlapping.