corgidrp.find_source#

Functions#

make_snmap(image, psf_binarymask[, ...])

Generates a signal-to-noise (S/N) map by convolving the image with the PSF.

psf_scalesub(image, xy, psf, fwhm)

Scales and subtracts the PSF at a given location in the image.

Module Contents#

corgidrp.find_source.make_snmap(image, psf_binarymask, image_without_planet=None, coronagraph=True)[source]#

Generates a signal-to-noise (S/N) map by convolving the image with the PSF.

Parameters:

  • image (ndarray) – The input image.

  • psf_binarymask (ndarray) – A binary mask for PSF convolution.

  • image_without_planet (ndarray, optional) – An image without any sources (~noise map) to make snmap more accurate.

  • coronagraph (bool, optional) – If True, an IWA is applied to derive the snmap. Defaults to True.

Returns:

The computed S/N map.

Return type:

ndarray

corgidrp.find_source.psf_scalesub(image, xy, psf, fwhm)[source]#

Scales and subtracts the PSF at a given location in the image.

Parameters:

  • image (ndarray) – The input image.

  • xy (tuple) – The (y, x) coordinates where the PSF should be subtracted.

  • psf (ndarray) – The point spread function.

  • fwhm (float) – Full width at half maximum of the PSF.

Returns:

The image after PSF subtraction.

Return type:

ndarray