get_psf_image¶
-
sherpa.astro.ui.
get_psf_image
(id=None)¶ Return the data used by image_psf.
- Parameters
id (int or str, optional) – The data set. If not given then the default identifier is used, as returned by get_default_id.
- Returns
psf_data
- Return type
a sherpa.image.PSFImage instance
- Raises
sherpa.utils.err.IdentifierErr – If a PSF model has not been created for the data set.
See also
get_kernel_image()
Return the data used by image_kernel.
image_kernel()
Display the 2D kernel for a data set in the image viewer.
image_psf()
Display the 2D PSF model for a data set in the image viewer.
Examples
Return the image data for the PSF for the default data set:
>>> iplot = get_psf_image() >>> iplot.y.shape (175, 200)