class jwst.barshadow.BarShadowStep(name=None, parent=None, config_file=None, _validate_kwds=True, **kws)[source]

Bases: JwstStep

BarShadowStep: Inserts the bar shadow and wavelength arrays into the data.

Bar shadow correction depends on the position of a pixel along the slit and the wavelength. It is only applied to uniform sources and only for NRS MSA data.

Create a Step instance.

  • name (str, optional) – The name of the Step instance. Used in logging messages and in cache filenames. If not provided, one will be generated based on the class name.

  • parent (Step instance, optional) – The parent step of this step. Used to determine a fully-qualified name for this step, and to determine the mode in which to run this step.

  • config_file (str path, optional) – The path to the config file that this step was initialized with. Use to determine relative path names of other config files.

  • **kws (dict) – Additional parameters to set. These will be set as member variables on the new Step instance.

Attributes Summary




Methods Summary


Perform the barshadow correction step

Attributes Documentation

class_alias = 'barshadow'
reference_file_types = ['barshadow']
inverse = boolean(default=False)    # Invert the operation
source_type = string(default=None)  # Process as specified source type.

Methods Documentation


Perform the barshadow correction step


input (JWST datamodel) – input JWST datamodel object


result – JWST datamodel object with barshadow extension(s) added

Return type:

jwst datamodel