astrowisp.fake_image.image module

Class Inheritance Diagram

Inheritance diagram of Image

Defines a base class for fake star images.

class astrowisp.fake_image.image.Image(x_resolution, y_resolution, background=0.0)[source]

Bases: ndarray

Inheritance diagram of astrowisp.fake_image.image.Image

A base class for fake images.

static __new__(cls, x_resolution, y_resolution, background=0.0)[source]

Create an image with the given resolution and background.

add_source(x, y, amplitude, psf=None, prf=None, subpix_map=array([[1.]]))[source]

Adds a source to this image.

Parameters:

  • x – The x coordinate of the center of the new source relative to the lower left corner of the image.

  • y – The x coordinate of the center of the new source relative to the lower left corner of the image.

  • amplitude – The amplitude to scale the PSF by.

  • psf – The PSF to use for the new source. Should be of some type inherited from fake_image.psf or None if PRF is used instead.

  • prf – The pixel response function (PRF) to use for the new source. Should be of some type inherited from fake_image.psf or None if PSF is used instead. The pixel response function is the PSF convolved with the pixel sensitivity map.

  • subpix_map – The sub-pixel sensitivity map. Should be a numpy.ndarray of some sort (i.e. provide shape attribute and subscripting).

Returns:

None