PointSource#

class scarlet2.PointSource(center, spectrum)[source]#

Point source model

Model for point sources

Because the morphology is determined by the model PSF, it does not need to be provided.

Parameters:

center (array, astropy.coordinates.SkyCoord) – Center position. If given as astropy sky coordinate, it will be transformed with the WCS of the model frame.
spectrum (array, Spectrum) – The spectrum of the point source.

Examples

A source declaration is restricted to a context of a Scene, which defines the Frame of the entire model.

>>> with Scene(model_frame) as scene:
>>>    point_source = PointSource(center, spectrum)

add_component(component, op)#

Add component to this source

Parameters:

component (Component) – The component to include in this source. It will be combined with the previous component according to the operator op.
op (callable) – Operator to combine this component with those before it in the list components. Conventional operators from the operator package can be used. Signature: op(x,y) -> z, where all terms have the same shapes

bbox: Box#: Bounding box of the model, in pixel coordinates of the model frame

center: jnp.ndarray#: Center position, in pixel coordinates of the model frame

component_ops: list#: List of operators to combine components for the final model

get(name=None)#

Get parameter(s) from this module

Parameters:: name (str, optional) – Name of parameter. If not set, returns all parameters.
Returns:: requested data arrays for parameters
Return type:: dict

property parameters#

Parameters defined for this module

set(values)#

Set parameter(s) from this module with values

Parameters:: values (dict[str,jnp.array]) – values to replace parameters with, identified by their name
Returns:: new module with parameter(s) replaced by values
Return type:: Module

PointSource