astrowisp.tests.test_background module

Class Inheritance Diagram

Test AstroWISP’s background extraction.

class astrowisp.tests.test_background.TestAnnulusBackground(methodName='runTest')

Bases: FloatTestCase

Test background extraction based on annuli around sources.

static add_flux_around_sources(source_x, source_y, radius, extra_flux, image)

Add extra flux to image pixels within a radius around sources.

Parameters:

• source_x – The x coordinates of the sources to add flux around.

• source_x – The y coordinates of the sources to add flux around.

• radius – Pixes with centers within this radius get extra flux.

• extra_flux – The amount of extra flux per pixel to add.

• image – The image to add flux to.

Returns:

None

test_background_error()

Test constant gradient background but with known error.

test_background_gradient()

Tests where the background has a constant non-zero gradient.

test_constant_image()

Test background extraction on an image with all pixels the same.

test_crowded_image()

Tests involving sources for which no BG can be determined.

test_partially_crowded_image()

A test where one source is crowded and 4 are not.