Gwa2Slit

class stdatamodels.jwst.transforms.Gwa2Slit(slits, models)

NIRSpec GWA to slit transform.

Parameters:

slitslist: A list of open slits. A slit is a namedtuple of type ~stdatamodels.jwst.transforms.models.Slit Slit(“name”, “shutter_id”, “dither_position”, “xcen”, “ycen”, “ymin”, “ymax”, “quadrant”, “source_id”, “shutter_state”, “source_name”, “source_alias”, “stellarity”, “source_xpos”, “source_ypos”, “source_ra”, “source_dec”])
modelslist: List of models (astropy.modeling.core.Model) corresponding to the list of slits.

Attributes Summary

Methods Summary

`__call__`(*inputs[, model_set_axis, ...])	Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.
`evaluate`(name, x, y, z)	Compute the x and y coordinates in the MSA frame for a given slit.
`get_model`(name)	Retrieve the model for a given slit.

Attributes Documentation

slits

Return the slits.

Returns:

Methods Documentation

__call__(*inputs, model_set_axis=None, with_bounding_box=False, fill_value=nan, equivalencies=None, inputs_map=None, **new_inputs): Evaluate this model using the given input(s) and the parameter values that were specified when the model was instantiated.

evaluate(name, x, y, z)

Compute the x and y coordinates in the MSA frame for a given slit.

Parameters:

namestr: Name of the slit.
x, y, zfloat or np.ndarray: The three angle coordinates at the GWA going from detector to sky.

Returns:

namestr: Name of the slit.
x_slit, y_slitfloat or np.ndarray: The x and y coordinates within the virtual slit.
lamfloat or np.ndarray: Wavelength.

get_model(name)

Retrieve the model for a given slit.

Parameters:

Returns: